diff --git a/src/localization/arabic.ts b/src/localization/arabic.ts
index 00f3de6652..4c00ba744b 100644
--- a/src/localization/arabic.ts
+++ b/src/localization/arabic.ts
@@ -9,6 +9,8 @@ export var arabicSurveyStrings = {
   startSurveyText: "بداية",
   otherItemText: "نص آخر",
   noneItemText: "لا شيء",
+  refuseItemText: "رفض الإجابة",
+  dontKnowItemText: "لا أعرف",
   selectAllItemText: "اختر الكل",
   progressText: "{1} صفحة {0} من",
   indexText: "{0} من {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["ar"] = "العربية";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "قم بسحب وإسقاط الخيارات هنا لترتيبها"// takePhotoCaption: "Take Photo" => "التقاط صورة"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "انقر فوق الزر أدناه لالتقاط صورة باستخدام الكاميرا."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "قم بسحب ملف وإفلاته أو تحديده لتحميله أو التقاط صورة باستخدام الكاميرا."
-// replaceFileCaption: "Replace file" => "استبدال الملف"// eachRowUniqueError: "Each row must have a unique value." => "يجب أن يكون لكل صف قيمة فريدة."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "لا يمكن تحميل الملفات. يرجى إضافة معالج لحدث \"onUploadFiles\"."
-// showDetails: "Show Details" => "اظهر التفاصيل"
-// hideDetails: "Hide Details" => "إخفاء التفاصيل"
-// ok: "OK" => "موافق"
-// cancel: "Cancel" => "إلغاء الأمر"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "استبدال الملف"// eachRowUniqueError: "Each row must have a unique value." => "يجب أن يكون لكل صف قيمة فريدة."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "لا يمكن تحميل الملفات. يرجى إضافة معالج لحدث \"onUploadFiles\"."
+// showDetails: "Show Details" => "اظهر التفاصيل"
+// hideDetails: "Hide Details" => "إخفاء التفاصيل"
+// ok: "OK" => "موافق"
+// cancel: "Cancel" => "إلغاء الأمر"
+// refuseItemText: "Refuse to answer" => "رفض الإجابة"
+// dontKnowItemText: "Don't know" => "لا أعرف"
\ No newline at end of file
diff --git a/src/localization/basque.ts b/src/localization/basque.ts
index 2c963ed499..a471d00b9a 100644
--- a/src/localization/basque.ts
+++ b/src/localization/basque.ts
@@ -9,6 +9,8 @@ export var basqueSurveyStrings = {
   startSurveyText: "Hasi",
   otherItemText: "Beste bat (zehaztu)",
   noneItemText: "Bat ere ez",
+  refuseItemText: "Erantzuteari uko egin",
+  dontKnowItemText: "Ez dakit",
   selectAllItemText: "Guztia hautatu",
   progressText: "{1}-(e)tik {0} orrialde",
   indexText: "{1} {0}",
@@ -122,9 +124,11 @@ surveyLocalization.localeNames["eu"] = "Euskara";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Arrastaka eta askatzen ditu hemen sailkatzeko"// takePhotoCaption: "Take Photo" => "Argazkia hartu"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Egin klik beheko botoian, kamerarekin argazki bat hartzeko."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Arrastatu eta askatu artxibo bat kamerarekin argazki bat kargatzeko edo hartzeko."
-// replaceFileCaption: "Replace file" => "Artxiboa ordeztu"// eachRowUniqueError: "Each row must have a unique value." => "Ilara bakoitzak balio bakarra izan behar du."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Artxiboak ezin dira kargatu. Gaineratu kontrolatzaile bat 'onUploadFiles' ekitaldirako."
-// showDetails: "Show Details" => "Xehetasunak erakutsi"
-// hideDetails: "Hide Details" => "Xehetasunak ezkutatu"
-// ok: "OK" => "Ados"
-// cancel: "Cancel" => "Ezeztatu"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Artxiboa ordeztu"// eachRowUniqueError: "Each row must have a unique value." => "Ilara bakoitzak balio bakarra izan behar du."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Artxiboak ezin dira kargatu. Gaineratu kontrolatzaile bat 'onUploadFiles' ekitaldirako."
+// showDetails: "Show Details" => "Xehetasunak erakutsi"
+// hideDetails: "Hide Details" => "Xehetasunak ezkutatu"
+// ok: "OK" => "Ados"
+// cancel: "Cancel" => "Ezeztatu"
+// refuseItemText: "Refuse to answer" => "Erantzuteari uko egin"
+// dontKnowItemText: "Don't know" => "Ez dakit"
\ No newline at end of file
diff --git a/src/localization/bulgarian.ts b/src/localization/bulgarian.ts
index f60c4550fd..efa64e2f6c 100644
--- a/src/localization/bulgarian.ts
+++ b/src/localization/bulgarian.ts
@@ -9,6 +9,8 @@ export var bulgarianStrings = {
   startSurveyText: "Начало",
   otherItemText: "Друго (опишете)",
   noneItemText: "Нито един",
+  refuseItemText: "Отказва да отговори",
+  dontKnowItemText: "Не знам",
   selectAllItemText: "Всички",
   progressText: "стр. {0}, общо стр. {1}",
   indexText: "{0} на {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["bg"] = "български";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Плъзнете и пуснете опции тук, за да ги класирате"// takePhotoCaption: "Take Photo" => "Направете снимка"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Кликнете върху бутона по-долу, за да направите снимка с помощта на камерата."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Плъзнете и пуснете или изберете файл за качване или правене на снимка с помощта на камерата."
-// replaceFileCaption: "Replace file" => "Заместване на файл"// eachRowUniqueError: "Each row must have a unique value." => "Всеки ред трябва да има уникална стойност."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файловете не могат да бъдат качени. Моля, добавете манипулатор за събитието \"onUploadFiles\"."
-// showDetails: "Show Details" => "Показване на подробни данни"
-// hideDetails: "Hide Details" => "Скрий подробните данни"
-// ok: "OK" => "Добре"
-// cancel: "Cancel" => "Отмени"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Заместване на файл"// eachRowUniqueError: "Each row must have a unique value." => "Всеки ред трябва да има уникална стойност."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файловете не могат да бъдат качени. Моля, добавете манипулатор за събитието \"onUploadFiles\"."
+// showDetails: "Show Details" => "Показване на подробни данни"
+// hideDetails: "Hide Details" => "Скрий подробните данни"
+// ok: "OK" => "Добре"
+// cancel: "Cancel" => "Отмени"
+// refuseItemText: "Refuse to answer" => "Отказва да отговори"
+// dontKnowItemText: "Don't know" => "Не знам"
\ No newline at end of file
diff --git a/src/localization/catalan.ts b/src/localization/catalan.ts
index b5e0e82392..59b9cb217c 100644
--- a/src/localization/catalan.ts
+++ b/src/localization/catalan.ts
@@ -9,6 +9,8 @@ export var catalanSurveyStrings = {
   startSurveyText: "Començar",
   otherItemText: "Un altre (descrigui)",
   noneItemText: "Cap",
+  refuseItemText: "Negar-se a respondre",
+  dontKnowItemText: "No sé",
   selectAllItemText: "Selecciona-ho tot",
   progressText: "Pàgina {0} de {1}",
   indexText: "{0} de {1}",
@@ -169,9 +171,11 @@ surveyLocalization.localeNames["ca"] = "català";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Arrossegueu i deixeu anar les opcions aquí per classificar-les"// takePhotoCaption: "Take Photo" => "Fer foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Feu clic al botó següent per fer una foto amb la càmera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Arrossegueu i deixeu anar o seleccioneu un fitxer per penjar-lo o fer-ne una foto amb la càmera."
-// replaceFileCaption: "Replace file" => "Substitueix el fitxer"// eachRowUniqueError: "Each row must have a unique value." => "Cada fila ha de tenir un valor únic."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "No es poden carregar fitxers. Afegiu un controlador per a l'esdeveniment 'onUploadFiles'."
-// showDetails: "Show Details" => "Mostra els detalls"
-// hideDetails: "Hide Details" => "Amaga els detalls"
-// ok: "OK" => "D'ACORD"
-// cancel: "Cancel" => "Cancel·lar"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Substitueix el fitxer"// eachRowUniqueError: "Each row must have a unique value." => "Cada fila ha de tenir un valor únic."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "No es poden carregar fitxers. Afegiu un controlador per a l'esdeveniment 'onUploadFiles'."
+// showDetails: "Show Details" => "Mostra els detalls"
+// hideDetails: "Hide Details" => "Amaga els detalls"
+// ok: "OK" => "D'ACORD"
+// cancel: "Cancel" => "Cancel·lar"
+// refuseItemText: "Refuse to answer" => "Negar-se a respondre"
+// dontKnowItemText: "Don't know" => "No sé"
\ No newline at end of file
diff --git a/src/localization/croatian.ts b/src/localization/croatian.ts
index ec3214530e..a5832e25e9 100644
--- a/src/localization/croatian.ts
+++ b/src/localization/croatian.ts
@@ -9,6 +9,8 @@ export var croatianStrings = {
   startSurveyText: "Početak",
   otherItemText: "Ostali (opis)",
   noneItemText: "Nitko",
+  refuseItemText: "Odbijte odgovoriti",
+  dontKnowItemText: "Ne znam",
   selectAllItemText: "Select All",
   progressText: "Stranica {0} od {1}",
   indexText: "{0} {1}",
@@ -127,9 +129,11 @@ surveyLocalization.localeNames["hr"] = "hrvatski";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Ovdje povucite i ispustite odabire da biste ih rangirali"// takePhotoCaption: "Take Photo" => "Snimi fotografiju"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kliknite donji gumb da biste snimili fotografiju pomoću kamere."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Povucite i ispustite ili odaberite datoteku za prijenos ili snimanje fotografije pomoću kamere."
-// replaceFileCaption: "Replace file" => "Zamijeni datoteku"// eachRowUniqueError: "Each row must have a unique value." => "Svaki redak mora imati jedinstvenu vrijednost."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Datoteke se ne mogu prenijeti. Dodajte rukovatelja za događaj 'onUploadFiles'."
-// showDetails: "Show Details" => "Pokaži detalje"
-// hideDetails: "Hide Details" => "Sakrij detalje"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Otkazati"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Zamijeni datoteku"// eachRowUniqueError: "Each row must have a unique value." => "Svaki redak mora imati jedinstvenu vrijednost."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Datoteke se ne mogu prenijeti. Dodajte rukovatelja za događaj 'onUploadFiles'."
+// showDetails: "Show Details" => "Pokaži detalje"
+// hideDetails: "Hide Details" => "Sakrij detalje"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Otkazati"
+// refuseItemText: "Refuse to answer" => "Odbijte odgovoriti"
+// dontKnowItemText: "Don't know" => "Ne znam"
\ No newline at end of file
diff --git a/src/localization/czech.ts b/src/localization/czech.ts
index 25d8b34c2b..61e0e696a5 100644
--- a/src/localization/czech.ts
+++ b/src/localization/czech.ts
@@ -9,6 +9,8 @@ export var czechSurveyStrings = {
   startSurveyText: "Začít",
   otherItemText: "Jiná odpověď (napište)",
   noneItemText: "Žádný",
+  refuseItemText: "Odmítnout odpovědět",
+  dontKnowItemText: "Nevím",
   selectAllItemText: "Vybrat vše",
   progressText: "Strana {0} z {1}",
   indexText: "{0} z {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["cs"] = "čeština";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Přetáhněte volby zde a seřaďte je"// takePhotoCaption: "Take Photo" => "Pořídit fotografii"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kliknutím na tlačítko níže pořídíte fotografii pomocí fotoaparátu."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Přetáhněte nebo vyberte soubor, který chcete nahrát nebo pořiďte fotografii pomocí fotoaparátu."
-// replaceFileCaption: "Replace file" => "Nahradit soubor"// eachRowUniqueError: "Each row must have a unique value." => "Každý řádek musí mít jedinečnou hodnotu."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Soubory nelze nahrát. Přidejte obslužnou rutinu pro událost 'onUploadFiles'."
-// showDetails: "Show Details" => "Zobrazit podrobnosti"
-// hideDetails: "Hide Details" => "Skrýt podrobnosti"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Zrušit"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Nahradit soubor"// eachRowUniqueError: "Each row must have a unique value." => "Každý řádek musí mít jedinečnou hodnotu."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Soubory nelze nahrát. Přidejte obslužnou rutinu pro událost 'onUploadFiles'."
+// showDetails: "Show Details" => "Zobrazit podrobnosti"
+// hideDetails: "Hide Details" => "Skrýt podrobnosti"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Zrušit"
+// refuseItemText: "Refuse to answer" => "Odmítnout odpovědět"
+// dontKnowItemText: "Don't know" => "Nevím"
\ No newline at end of file
diff --git a/src/localization/danish.ts b/src/localization/danish.ts
index 8adab4680c..4746aabd3c 100644
--- a/src/localization/danish.ts
+++ b/src/localization/danish.ts
@@ -9,6 +9,8 @@ export var danishSurveyStrings = {
   startSurveyText: "Start",
   otherItemText: "Valgfrit svar...",
   noneItemText: "Ingen",
+  refuseItemText: "Nægt at svare",
+  dontKnowItemText: "Ved ikke",
   selectAllItemText: "Vælg alle",
   progressText: "Side {0} af {1}",
   indexText: "{0} af {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["da"] = "dansk";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Træk og slip valg her for at rangere dem"// takePhotoCaption: "Take Photo" => "Tag billede"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klik på knappen nedenfor for at tage et billede med kameraet."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Træk og slip, eller vælg en fil, der skal uploades, eller tag et billede med kameraet."
-// replaceFileCaption: "Replace file" => "Erstat fil"// eachRowUniqueError: "Each row must have a unique value." => "Hver række skal have en entydig værdi."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan ikke uploades. Tilføj en handler for hændelsen 'onUploadFiles'."
-// showDetails: "Show Details" => "Vis detaljer"
-// hideDetails: "Hide Details" => "Skjul detaljer"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Aflyse"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Erstat fil"// eachRowUniqueError: "Each row must have a unique value." => "Hver række skal have en entydig værdi."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan ikke uploades. Tilføj en handler for hændelsen 'onUploadFiles'."
+// showDetails: "Show Details" => "Vis detaljer"
+// hideDetails: "Hide Details" => "Skjul detaljer"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Aflyse"
+// refuseItemText: "Refuse to answer" => "Nægt at svare"
+// dontKnowItemText: "Don't know" => "Ved ikke"
\ No newline at end of file
diff --git a/src/localization/dutch.ts b/src/localization/dutch.ts
index 69919f1fb5..674ac55c4d 100644
--- a/src/localization/dutch.ts
+++ b/src/localization/dutch.ts
@@ -9,6 +9,8 @@ export var dutchSurveyStrings = {
   startSurveyText: "Start",
   otherItemText: "Anders, nl.",
   noneItemText: "Geen",
+  refuseItemText: "Weiger te antwoorden",
+  dontKnowItemText: "Weet niet",
   selectAllItemText: "Selecteer Alles",
   progressText: "Pagina {0} van {1}",
   indexText: "{0} van {1}",
@@ -127,9 +129,11 @@ surveyLocalization.localeNames["nl"] = "nederlands";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Drag en drop keuzes hier om ze te rangschikken"// takePhotoCaption: "Take Photo" => "Foto maken"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klik op de onderstaande knop om een foto te maken met de camera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Sleep en zet neer of selecteer een bestand om te uploaden of maak een foto met de camera."
-// replaceFileCaption: "Replace file" => "Bestand vervangen"// eachRowUniqueError: "Each row must have a unique value." => "Elke rij moet een unieke waarde hebben."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Bestanden kunnen niet worden geüpload. Voeg een handler toe voor de gebeurtenis 'onUploadFiles'."
-// showDetails: "Show Details" => "Toon details"
-// hideDetails: "Hide Details" => "Verberg details"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Annuleren"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Bestand vervangen"// eachRowUniqueError: "Each row must have a unique value." => "Elke rij moet een unieke waarde hebben."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Bestanden kunnen niet worden geüpload. Voeg een handler toe voor de gebeurtenis 'onUploadFiles'."
+// showDetails: "Show Details" => "Toon details"
+// hideDetails: "Hide Details" => "Verberg details"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Annuleren"
+// refuseItemText: "Refuse to answer" => "Weiger te antwoorden"
+// dontKnowItemText: "Don't know" => "Weet niet"
\ No newline at end of file
diff --git a/src/localization/english.ts b/src/localization/english.ts
index bdb2f8a8fb..d1e6122316 100644
--- a/src/localization/english.ts
+++ b/src/localization/english.ts
@@ -10,6 +10,8 @@ export var englishStrings = {
   startSurveyText: "Start",
   otherItemText: "Other (describe)",
   noneItemText: "None",
+  refuseItemText: "Refuse to answer",
+  dontKnowItemText: "Don't know",
   selectAllItemText: "Select All",
   progressText: "Page {0} of {1}",
   indexText: "{0} of {1}",
diff --git a/src/localization/estonian.ts b/src/localization/estonian.ts
index 3c6bf441df..31e59d2e50 100644
--- a/src/localization/estonian.ts
+++ b/src/localization/estonian.ts
@@ -9,6 +9,8 @@ export var estonianSurveyStrings = {
   startSurveyText: "Alusta",
   otherItemText: "Muu (täpsusta)",
   noneItemText: "Mitte midagi",
+  refuseItemText: "Keeldu vastamast",
+  dontKnowItemText: "Ei tea",
   selectAllItemText: "Vali kõik",
   progressText: "Lehekülg {0}/{1}",
   indexText: "{0} {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["et"] = "eesti keel";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Lohistage valikuid siia, et neid järjestada"// takePhotoCaption: "Take Photo" => "Pildistamine"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kaamera abil pildistamiseks klõpsake allolevat nuppu."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Pukseerige või valige üleslaaditav fail või pildistage seda kaamera abil."
-// replaceFileCaption: "Replace file" => "Asenda fail"// eachRowUniqueError: "Each row must have a unique value." => "Igal real peab olema kordumatu väärtus."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Faile ei saa üles laadida. Palun lisage sündmuse \"onUploadFiles\" jaoks käitleja."
-// showDetails: "Show Details" => "Näita detaile"
-// hideDetails: "Hide Details" => "Peida üksikasjad"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Tühistama"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Asenda fail"// eachRowUniqueError: "Each row must have a unique value." => "Igal real peab olema kordumatu väärtus."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Faile ei saa üles laadida. Palun lisage sündmuse \"onUploadFiles\" jaoks käitleja."
+// showDetails: "Show Details" => "Näita detaile"
+// hideDetails: "Hide Details" => "Peida üksikasjad"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Tühistama"
+// refuseItemText: "Refuse to answer" => "Keeldu vastamast"
+// dontKnowItemText: "Don't know" => "Ei tea"
\ No newline at end of file
diff --git a/src/localization/finnish.ts b/src/localization/finnish.ts
index 10883d4a8d..264aed20b2 100644
--- a/src/localization/finnish.ts
+++ b/src/localization/finnish.ts
@@ -9,6 +9,8 @@ export var finnishSurveyStrings = {
   startSurveyText: "Aloita",
   otherItemText: "Muu (tarkenna)",
   noneItemText: "Ei mitään",
+  refuseItemText: "Kieltäydy vastaamasta",
+  dontKnowItemText: "Ei tiedä",
   selectAllItemText: "Valitse kaikki",
   progressText: "Sivu {0} / {1}",
   indexText: "{0} / {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["fi"] = "suomi";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Vedä ja pudota vaihtoehdot tähän luokitellaksesi ne"// takePhotoCaption: "Take Photo" => "Ota valokuva"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Napsauta alla olevaa painiketta ottaaksesi valokuvan kameralla."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Vedä ja pudota tai valitse ladattava tiedosto tai ota valokuva kameralla."
-// replaceFileCaption: "Replace file" => "Korvaa tiedosto"// eachRowUniqueError: "Each row must have a unique value." => "Jokaisella rivillä on oltava yksilöllinen arvo."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Tiedostoja ei voi ladata. Lisää käsittelijä onUploadFiles-tapahtumalle."
-// showDetails: "Show Details" => "Näytä tiedot"
-// hideDetails: "Hide Details" => "Piilota tiedot"
-// ok: "OK" => "OKEI"
-// cancel: "Cancel" => "Perua"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Korvaa tiedosto"// eachRowUniqueError: "Each row must have a unique value." => "Jokaisella rivillä on oltava yksilöllinen arvo."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Tiedostoja ei voi ladata. Lisää käsittelijä onUploadFiles-tapahtumalle."
+// showDetails: "Show Details" => "Näytä tiedot"
+// hideDetails: "Hide Details" => "Piilota tiedot"
+// ok: "OK" => "OKEI"
+// cancel: "Cancel" => "Perua"
+// refuseItemText: "Refuse to answer" => "Kieltäydy vastaamasta"
+// dontKnowItemText: "Don't know" => "Ei tiedä"
\ No newline at end of file
diff --git a/src/localization/french.ts b/src/localization/french.ts
index 5868a98f3d..ca7f46189a 100644
--- a/src/localization/french.ts
+++ b/src/localization/french.ts
@@ -9,6 +9,8 @@ export var frenchSurveyStrings = {
   startSurveyText: "Commencer",
   otherItemText: "Autre (préciser)",
   noneItemText: "Aucun",
+  refuseItemText: "Refuser de répondre",
+  dontKnowItemText: "Sais pas",
   selectAllItemText: "Tout sélectionner",
   progressText: "Page {0} sur {1}",
   indexText: "{0} sur {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["fr"] = "français";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Faites glisser et déposez les choix ici pour les classer"// takePhotoCaption: "Take Photo" => "Prendre une photo"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Cliquez sur le bouton ci-dessous pour prendre une photo à l’aide de l’appareil photo."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Faites glisser et déposez ou sélectionnez un fichier à télécharger ou à prendre une photo à l’aide de l’appareil photo."
-// replaceFileCaption: "Replace file" => "Remplacer le fichier"// eachRowUniqueError: "Each row must have a unique value." => "Chaque ligne doit avoir une valeur unique."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Les fichiers ne peuvent pas être téléchargés. Veuillez ajouter un gestionnaire pour l’événement 'onUploadFiles'."
-// showDetails: "Show Details" => "Afficher les détails"
-// hideDetails: "Hide Details" => "Masquer les détails"
-// ok: "OK" => "D’ACCORD"
-// cancel: "Cancel" => "Annuler"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Remplacer le fichier"// eachRowUniqueError: "Each row must have a unique value." => "Chaque ligne doit avoir une valeur unique."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Les fichiers ne peuvent pas être téléchargés. Veuillez ajouter un gestionnaire pour l’événement 'onUploadFiles'."
+// showDetails: "Show Details" => "Afficher les détails"
+// hideDetails: "Hide Details" => "Masquer les détails"
+// ok: "OK" => "D’ACCORD"
+// cancel: "Cancel" => "Annuler"
+// refuseItemText: "Refuse to answer" => "Refuser de répondre"
+// dontKnowItemText: "Don't know" => "Sais pas"
\ No newline at end of file
diff --git a/src/localization/georgian.ts b/src/localization/georgian.ts
index 195fd2d990..027605cbc4 100644
--- a/src/localization/georgian.ts
+++ b/src/localization/georgian.ts
@@ -9,6 +9,8 @@ export var georgianSurveyStrings = {
   startSurveyText: "დაქოქვა",
   otherItemText: "სხვა (გთხოვთ მიუთითეთ)",
   noneItemText: "არცერთი",
+  refuseItemText: "უარი პასუხზე",
+  dontKnowItemText: "არ ვიცი",
   selectAllItemText: "ყველას მონიშნა",
   progressText: "გვერდი {0} / {1}",
   indexText: "{1} {0}",
@@ -182,9 +184,11 @@ surveyLocalization.localeNames["ka"] = "ქართული";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "გადაიტანეთ და ჩამოაგდეთ არჩევანი აქ, რომ დაასახელოთ ისინი"// takePhotoCaption: "Take Photo" => "გადაიღეთ ფოტო"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "დააჭირეთ ქვემოთ მოცემულ ღილაკს, რომ გადაიღოთ ფოტო კამერის გამოყენებით."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "გადაიტანეთ და ჩამოაგდეთ ან შეარჩიეთ ფაილი კამერის გამოყენებით ფოტოს ასატვირთად ან გადასაღებად."
-// replaceFileCaption: "Replace file" => "ფაილის შეცვლა"// eachRowUniqueError: "Each row must have a unique value." => "თითოეულ რიგს უნდა ჰქონდეს უნიკალური მნიშვნელობა."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "ფაილების ატვირთვა შეუძლებელია. გთხოვთ, დაამატოთ დამმუშავებელი 'onUploadFiles' ღონისძიებისთვის."
-// showDetails: "Show Details" => "დეტალების ჩვენება"
-// hideDetails: "Hide Details" => "დეტალების დამალვა"
-// ok: "OK" => "კარგი"
-// cancel: "Cancel" => "გაუქმება"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "ფაილის შეცვლა"// eachRowUniqueError: "Each row must have a unique value." => "თითოეულ რიგს უნდა ჰქონდეს უნიკალური მნიშვნელობა."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "ფაილების ატვირთვა შეუძლებელია. გთხოვთ, დაამატოთ დამმუშავებელი 'onUploadFiles' ღონისძიებისთვის."
+// showDetails: "Show Details" => "დეტალების ჩვენება"
+// hideDetails: "Hide Details" => "დეტალების დამალვა"
+// ok: "OK" => "კარგი"
+// cancel: "Cancel" => "გაუქმება"
+// refuseItemText: "Refuse to answer" => "უარი პასუხზე"
+// dontKnowItemText: "Don't know" => "არ ვიცი"
\ No newline at end of file
diff --git a/src/localization/german.ts b/src/localization/german.ts
index c31474ef5b..9686ef35c4 100644
--- a/src/localization/german.ts
+++ b/src/localization/german.ts
@@ -9,6 +9,8 @@ export var germanSurveyStrings = {
   startSurveyText: "Start",
   otherItemText: "Sonstiges (Bitte angeben)",
   noneItemText: "Nichts trifft zu",
+  refuseItemText: "Verweigern Sie die Antwort",
+  dontKnowItemText: "Weiß ich nicht",
   selectAllItemText: "Alles auswählen",
   progressText: "Seite {0} von {1}",
   indexText: "{0} von {1}",
@@ -115,9 +117,11 @@ surveyLocalization.localeNames["de"] = "deutsch";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Ziehen Sie die Auswahl hierher, um sie zu ordnen"// takePhotoCaption: "Take Photo" => "Foto machen"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klicken Sie auf die Schaltfläche unten, um ein Foto mit der Kamera aufzunehmen."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Ziehen Sie eine Datei per Drag & Drop oder wählen Sie sie aus, um sie hochzuladen oder ein Foto mit der Kamera aufzunehmen."
-// replaceFileCaption: "Replace file" => "Datei ersetzen"// eachRowUniqueError: "Each row must have a unique value." => "Jede Zeile muss einen eindeutigen Wert haben."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Dateien können nicht hochgeladen werden. Fügen Sie einen Handler für das Ereignis 'onUploadFiles' hinzu."
-// showDetails: "Show Details" => "Details anzeigen"
-// hideDetails: "Hide Details" => "Details ausblenden"
-// ok: "OK" => "OKAY"
-// cancel: "Cancel" => "Abbrechen"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Datei ersetzen"// eachRowUniqueError: "Each row must have a unique value." => "Jede Zeile muss einen eindeutigen Wert haben."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Dateien können nicht hochgeladen werden. Fügen Sie einen Handler für das Ereignis 'onUploadFiles' hinzu."
+// showDetails: "Show Details" => "Details anzeigen"
+// hideDetails: "Hide Details" => "Details ausblenden"
+// ok: "OK" => "OKAY"
+// cancel: "Cancel" => "Abbrechen"
+// refuseItemText: "Refuse to answer" => "Verweigern Sie die Antwort"
+// dontKnowItemText: "Don't know" => "Weiß ich nicht"
\ No newline at end of file
diff --git a/src/localization/greek.ts b/src/localization/greek.ts
index e2c4903200..027594dad1 100644
--- a/src/localization/greek.ts
+++ b/src/localization/greek.ts
@@ -9,6 +9,8 @@ export var greekSurveyStrings = {
   startSurveyText: "Αρχή",
   otherItemText: "Άλλο (παρακαλώ διευκρινίστε)",
   noneItemText: "Κανένας",
+  refuseItemText: "Αρνηθείτε να απαντήσετε",
+  dontKnowItemText: "Δεν ξέρω",
   selectAllItemText: "Επιλογή όλων",
   progressText: "Σελίδα {0} από {1}",
   indexText: "{0} από {1}",
@@ -114,9 +116,11 @@ surveyLocalization.localeNames["gr"] = "ελληνικά";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Σύρετε και αποθέστε επιλογές εδώ για να τις κατατάξετε"// takePhotoCaption: "Take Photo" => "Λήψη φωτογραφίας"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Κάντε κλικ στο παρακάτω κουμπί για να τραβήξετε μια φωτογραφία χρησιμοποιώντας την κάμερα."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Σύρετε και αποθέστε ή επιλέξτε ένα αρχείο για αποστολή ή λήψη φωτογραφίας χρησιμοποιώντας την κάμερα."
-// replaceFileCaption: "Replace file" => "Αντικατάσταση αρχείου"// eachRowUniqueError: "Each row must have a unique value." => "Κάθε γραμμή πρέπει να έχει μια μοναδική τιμή."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Δεν είναι δυνατή η αποστολή αρχείων. Προσθέστε ένα πρόγραμμα χειρισμού για το συμβάν 'onUploadFiles'."
-// showDetails: "Show Details" => "Εμφάνιση λεπτομερειών"
-// hideDetails: "Hide Details" => "Απόκρυψη λεπτομερειών"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Ακυρώνω"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Αντικατάσταση αρχείου"// eachRowUniqueError: "Each row must have a unique value." => "Κάθε γραμμή πρέπει να έχει μια μοναδική τιμή."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Δεν είναι δυνατή η αποστολή αρχείων. Προσθέστε ένα πρόγραμμα χειρισμού για το συμβάν 'onUploadFiles'."
+// showDetails: "Show Details" => "Εμφάνιση λεπτομερειών"
+// hideDetails: "Hide Details" => "Απόκρυψη λεπτομερειών"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Ακυρώνω"
+// refuseItemText: "Refuse to answer" => "Αρνηθείτε να απαντήσετε"
+// dontKnowItemText: "Don't know" => "Δεν ξέρω"
\ No newline at end of file
diff --git a/src/localization/hebrew.ts b/src/localization/hebrew.ts
index 6aa482cfa3..2ac5c87790 100644
--- a/src/localization/hebrew.ts
+++ b/src/localization/hebrew.ts
@@ -9,6 +9,8 @@ export var hebrewSurveyStrings = {
   startSurveyText: "הַתחָלָה",
   otherItemText: "אחר (נא לתאר)",
   noneItemText: "אף אחד",
+  refuseItemText: "מסרבים לענות",
+  dontKnowItemText: "לא יודע",
   selectAllItemText: "בחר הכל",
   progressText: "דף {1} מתוך {0}",
   indexText: "{0} מתוך {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["he"] = "עברית";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "גרור ושחרר אפשרויות לכאן כדי לדרג אותן"// takePhotoCaption: "Take Photo" => "צלם תמונה"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "לחץ על הלחצן למטה כדי לצלם תמונה באמצעות המצלמה."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "גרור ושחרר או בחר קובץ כדי להעלות או לצלם תמונה באמצעות המצלמה."
-// replaceFileCaption: "Replace file" => "החלפת קובץ"// eachRowUniqueError: "Each row must have a unique value." => "לכל שורה חייב להיות ערך ייחודי."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "לא ניתן להעלות קבצים. אנא הוסף מטפל לאירוע 'onUploadFiles'."
-// showDetails: "Show Details" => "הראה פרטים"
-// hideDetails: "Hide Details" => "הסתר פרטים"
-// ok: "OK" => "אוקיי"
-// cancel: "Cancel" => "ביטל"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "החלפת קובץ"// eachRowUniqueError: "Each row must have a unique value." => "לכל שורה חייב להיות ערך ייחודי."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "לא ניתן להעלות קבצים. אנא הוסף מטפל לאירוע 'onUploadFiles'."
+// showDetails: "Show Details" => "הראה פרטים"
+// hideDetails: "Hide Details" => "הסתר פרטים"
+// ok: "OK" => "אוקיי"
+// cancel: "Cancel" => "ביטל"
+// refuseItemText: "Refuse to answer" => "מסרבים לענות"
+// dontKnowItemText: "Don't know" => "לא יודע"
\ No newline at end of file
diff --git a/src/localization/hindi.ts b/src/localization/hindi.ts
index b369fb43cd..7eb49f1918 100644
--- a/src/localization/hindi.ts
+++ b/src/localization/hindi.ts
@@ -9,6 +9,8 @@ export var hindiStrings = {
   startSurveyText: "शुरू",
   otherItemText: "दूसरा (वर्णन करें)",
   noneItemText: "कोई नहीं",
+  refuseItemText: "जवाब देने से इनकार",
+  dontKnowItemText: "नहीं मालूम",
   selectAllItemText: "सभी का चयन करें",
   progressText: "पृष्ठ 1 में से 0",
   indexText: "{1} का {0}",
@@ -135,4 +137,5 @@ surveyLocalization.localeNames["hi"] = "hindi";
 // showDetails: "Show Details" => "विवरण दिखाएँ"
 // hideDetails: "Hide Details" => "विवरण छुपाएँ"
 // ok: "OK" => "ठीक है"
-// cancel: "Cancel" => "रद्द करना"
\ No newline at end of file
+// cancel: "Cancel" => "रद्द करना"// refuseItemText: "Refuse to answer" => "जवाब देने से इनकार"
+// dontKnowItemText: "Don't know" => "नहीं मालूम"
\ No newline at end of file
diff --git a/src/localization/hungarian.ts b/src/localization/hungarian.ts
index dd80b7b0a7..7c7ade8069 100644
--- a/src/localization/hungarian.ts
+++ b/src/localization/hungarian.ts
@@ -9,6 +9,8 @@ export var hungarianSurveyStrings = {
   startSurveyText: "Rajt",
   otherItemText: "Egyéb (adja meg)",
   noneItemText: "Egyik sem",
+  refuseItemText: "A válaszadás megtagadása",
+  dontKnowItemText: "Nem tudom",
   selectAllItemText: "Mindet kiválaszt",
   progressText: "{0}./{1} oldal",
   indexText: "{0} {1} közül",
@@ -128,9 +130,11 @@ surveyLocalization.localeNames["hu"] = "magyar";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Húzza ide a választási lehetőségeket a rangsoroláshoz"// takePhotoCaption: "Take Photo" => "Fotó készítése"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kattintson az alábbi gombra, hogy fényképet készítsen a fényképezőgéppel."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Húzzon át vagy válasszon ki egy fájlt, amelyet fel szeretne tölteni vagy fényképet szeretne készíteni a kamerával."
-// replaceFileCaption: "Replace file" => "Fájl cseréje"// eachRowUniqueError: "Each row must have a unique value." => "Minden sornak egyedi értékkel kell rendelkeznie."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "A fájlok nem tölthetők fel. Adjon hozzá egy kezelőt az \"onUploadFiles\" eseményhez."
-// showDetails: "Show Details" => "Mutasd a részleteket"
-// hideDetails: "Hide Details" => "Részletek elrejtése"
-// ok: "OK" => "OKÉ"
-// cancel: "Cancel" => "Érvénytelenít"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Fájl cseréje"// eachRowUniqueError: "Each row must have a unique value." => "Minden sornak egyedi értékkel kell rendelkeznie."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "A fájlok nem tölthetők fel. Adjon hozzá egy kezelőt az \"onUploadFiles\" eseményhez."
+// showDetails: "Show Details" => "Mutasd a részleteket"
+// hideDetails: "Hide Details" => "Részletek elrejtése"
+// ok: "OK" => "OKÉ"
+// cancel: "Cancel" => "Érvénytelenít"
+// refuseItemText: "Refuse to answer" => "A válaszadás megtagadása"
+// dontKnowItemText: "Don't know" => "Nem tudom"
\ No newline at end of file
diff --git a/src/localization/icelandic.ts b/src/localization/icelandic.ts
index bb08ca45d0..cc053a4df4 100644
--- a/src/localization/icelandic.ts
+++ b/src/localization/icelandic.ts
@@ -9,6 +9,8 @@ export var icelandicSurveyStrings = {
   startSurveyText: "Byrjaðu",
   otherItemText: "Hinn (skýring)",
   noneItemText: "Enginn",
+  refuseItemText: "Neita að svara",
+  dontKnowItemText: "Veit ekki",
   selectAllItemText: "Velja allt",
   progressText: "Síða {0} of {1}",
   indexText: "{0} af {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["is"] = "íslenska";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Dragðu og slepptu valkostum hér til að raða þeim"// takePhotoCaption: "Take Photo" => "Taka mynd"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Smelltu á hnappinn hér að neðan til að taka mynd með myndavélinni."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Dragðu og slepptu eða veldu skrá til að hlaða upp eða taka mynd með myndavélinni."
-// replaceFileCaption: "Replace file" => "Skipta út skrá"// eachRowUniqueError: "Each row must have a unique value." => "Hver lína verður að hafa einstakt gildi."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Ekki er hægt að hlaða upp skrám. Vinsamlegast bættu við rekli fyrir 'onUploadFiles' atvikið."
-// showDetails: "Show Details" => "Sýna upplýsingar"
-// hideDetails: "Hide Details" => "Fela upplýsingar"
-// ok: "OK" => "ÓKEI"
-// cancel: "Cancel" => "Afturkalla"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Skipta út skrá"// eachRowUniqueError: "Each row must have a unique value." => "Hver lína verður að hafa einstakt gildi."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Ekki er hægt að hlaða upp skrám. Vinsamlegast bættu við rekli fyrir 'onUploadFiles' atvikið."
+// showDetails: "Show Details" => "Sýna upplýsingar"
+// hideDetails: "Hide Details" => "Fela upplýsingar"
+// ok: "OK" => "ÓKEI"
+// cancel: "Cancel" => "Afturkalla"
+// refuseItemText: "Refuse to answer" => "Neita að svara"
+// dontKnowItemText: "Don't know" => "Veit ekki"
\ No newline at end of file
diff --git a/src/localization/indonesian.ts b/src/localization/indonesian.ts
index d777f37502..1760fef3b8 100644
--- a/src/localization/indonesian.ts
+++ b/src/localization/indonesian.ts
@@ -9,6 +9,8 @@ export var indonesianStrings = {
   startSurveyText: "Mulai",
   otherItemText: "Lainnya (jelaskan)",
   noneItemText: "Tidak Ada",
+  refuseItemText: "Menolak untuk menjawab",
+  dontKnowItemText: "Tidak tahu",
   selectAllItemText: "Pilih Semua",
   progressText: "Halaman {0} dari {1}",
   indexText: "{0} dari {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["id"] = "bahasa Indonesia";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Seret dan lepas pilihan di sini untuk memberi peringkat"// takePhotoCaption: "Take Photo" => "Ambil Foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klik tombol di bawah ini untuk mengambil foto menggunakan kamera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Seret dan lepas atau pilih file untuk diunggah atau mengambil foto menggunakan kamera."
-// replaceFileCaption: "Replace file" => "Ganti file"// eachRowUniqueError: "Each row must have a unique value." => "Setiap baris harus memiliki nilai unik."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "File tidak dapat diunggah. Harap tambahkan handler untuk acara 'onUploadFiles'."
-// showDetails: "Show Details" => "Tampilkan Detail"
-// hideDetails: "Hide Details" => "Sembunyikan Detail"
-// ok: "OK" => "OKE"
-// cancel: "Cancel" => "Membatalkan"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Ganti file"// eachRowUniqueError: "Each row must have a unique value." => "Setiap baris harus memiliki nilai unik."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "File tidak dapat diunggah. Harap tambahkan handler untuk acara 'onUploadFiles'."
+// showDetails: "Show Details" => "Tampilkan Detail"
+// hideDetails: "Hide Details" => "Sembunyikan Detail"
+// ok: "OK" => "OKE"
+// cancel: "Cancel" => "Membatalkan"
+// refuseItemText: "Refuse to answer" => "Menolak untuk menjawab"
+// dontKnowItemText: "Don't know" => "Tidak tahu"
\ No newline at end of file
diff --git a/src/localization/italian.ts b/src/localization/italian.ts
index ab976c9806..1f81f5d7e1 100644
--- a/src/localization/italian.ts
+++ b/src/localization/italian.ts
@@ -9,6 +9,8 @@ export var italianSurveyStrings = {
   startSurveyText: "Inizio",
   otherItemText: "Altro (descrivi)",
   noneItemText: "Nessuno",
+  refuseItemText: "Rifiuta di rispondere",
+  dontKnowItemText: "Non lo so",
   selectAllItemText: "Seleziona tutti",
   progressText: "Pagina {0} di {1}",
   indexText: "{0} da {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["it"] = "italiano";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Trascina e rilascia le scelte qui per classificarle"// takePhotoCaption: "Take Photo" => "Scatta foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Fai clic sul pulsante qui sotto per scattare una foto utilizzando la fotocamera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Trascina e rilascia o seleziona un file da caricare o scattare una foto utilizzando la fotocamera."
-// replaceFileCaption: "Replace file" => "Sostituisci file"// eachRowUniqueError: "Each row must have a unique value." => "Ogni riga deve avere un valore univoco."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "I file non possono essere caricati. Aggiungere un gestore per l'evento 'onUploadFiles'."
-// showDetails: "Show Details" => "Mostra dettagli"
-// hideDetails: "Hide Details" => "Nascondi dettagli"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Annulla"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Sostituisci file"// eachRowUniqueError: "Each row must have a unique value." => "Ogni riga deve avere un valore univoco."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "I file non possono essere caricati. Aggiungere un gestore per l'evento 'onUploadFiles'."
+// showDetails: "Show Details" => "Mostra dettagli"
+// hideDetails: "Hide Details" => "Nascondi dettagli"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Annulla"
+// refuseItemText: "Refuse to answer" => "Rifiuta di rispondere"
+// dontKnowItemText: "Don't know" => "Non lo so"
\ No newline at end of file
diff --git a/src/localization/japanese.ts b/src/localization/japanese.ts
index 6e144a619f..f200aad0ed 100644
--- a/src/localization/japanese.ts
+++ b/src/localization/japanese.ts
@@ -9,6 +9,8 @@ export var japaneseSurveyStrings = {
   startSurveyText: "スタート",
   otherItemText: "その他（説明）",
   noneItemText: "なし",
+  refuseItemText: "回答を拒否する",
+  dontKnowItemText: "わかりません",
   selectAllItemText: "すべて選択",
   progressText: "{0}/{1}頁",
   indexText: "{1}の{0}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["ja"] = "日本語";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "ここに選択肢をドラッグアンドドロップしてランク付けします"// takePhotoCaption: "Take Photo" => "写真を撮る"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "下のボタンをクリックして、カメラを使用して写真を撮ります。"
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "アップロードするファイルをドラッグアンドドロップまたは選択するか、カメラを使用して写真を撮ります。"
-// replaceFileCaption: "Replace file" => "ファイルの置換"// eachRowUniqueError: "Each row must have a unique value." => "各行には一意の値が必要です。"
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "ファイルはアップロードできません。「onUploadFiles」イベントのハンドラーを追加してください。"
-// showDetails: "Show Details" => "詳細を表示"
-// hideDetails: "Hide Details" => "詳細を隠す"
-// ok: "OK" => "わかりました"
-// cancel: "Cancel" => "キャンセル"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "ファイルの置換"// eachRowUniqueError: "Each row must have a unique value." => "各行には一意の値が必要です。"
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "ファイルはアップロードできません。「onUploadFiles」イベントのハンドラーを追加してください。"
+// showDetails: "Show Details" => "詳細を表示"
+// hideDetails: "Hide Details" => "詳細を隠す"
+// ok: "OK" => "わかりました"
+// cancel: "Cancel" => "キャンセル"
+// refuseItemText: "Refuse to answer" => "回答を拒否する"
+// dontKnowItemText: "Don't know" => "わかりません"
\ No newline at end of file
diff --git a/src/localization/kazakh.ts b/src/localization/kazakh.ts
index d9675c8c9f..8da5d0617b 100644
--- a/src/localization/kazakh.ts
+++ b/src/localization/kazakh.ts
@@ -9,6 +9,8 @@ export var kazakhStrings = {
   startSurveyText: "Бастау",
   otherItemText: "Басқа (өтінеміз, жазыңыз)",
   noneItemText: "Жоқ",
+  refuseItemText: "Жауап беруден бас тарту",
+  dontKnowItemText: "Білмеймін",
   selectAllItemText: "Барлығын таңдау",
   progressText: "{0} ден {1} бет ",
   indexText: "{1} {0}",
@@ -128,9 +130,11 @@ surveyLocalization.localeNames["kk"] = "Kazakh";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Таңдауды рангтеу үшін осында апарып тастау"// takePhotoCaption: "Take Photo" => "Фотосуретке түсу"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Камераны пайдаланып суретке түсу үшін төмендегі түймені басыңыз."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Фотоаппаратты пайдаланып кері жүктеу немесе суретке түсіру үшін файлды апарып тастаыңыз немесе таңдаңыз."
-// replaceFileCaption: "Replace file" => "Файлды ауыстыру"// eachRowUniqueError: "Each row must have a unique value." => "Әр жолдың бірегей мәні болуы тиіс."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файлдарды кері жүктеу мүмкін емес. 'OnUploadFiles' оқиғасына өңдеушіні қосуыңызды сұраймыз."
-// showDetails: "Show Details" => "Егжей-тегжейін көрсету"
-// hideDetails: "Hide Details" => "Егжей- тегжейін жасы"
-// ok: "OK" => "ЖАҚСЫ"
-// cancel: "Cancel" => "Болдырмау"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Файлды ауыстыру"// eachRowUniqueError: "Each row must have a unique value." => "Әр жолдың бірегей мәні болуы тиіс."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файлдарды кері жүктеу мүмкін емес. 'OnUploadFiles' оқиғасына өңдеушіні қосуыңызды сұраймыз."
+// showDetails: "Show Details" => "Егжей-тегжейін көрсету"
+// hideDetails: "Hide Details" => "Егжей- тегжейін жасы"
+// ok: "OK" => "ЖАҚСЫ"
+// cancel: "Cancel" => "Болдырмау"
+// refuseItemText: "Refuse to answer" => "Жауап беруден бас тарту"
+// dontKnowItemText: "Don't know" => "Білмеймін"
\ No newline at end of file
diff --git a/src/localization/korean.ts b/src/localization/korean.ts
index ba33e54372..8834a17e4d 100644
--- a/src/localization/korean.ts
+++ b/src/localization/korean.ts
@@ -9,6 +9,8 @@ export var koreanStrings = {
   startSurveyText: "시작",
   otherItemText: "기타 (설명)",
   noneItemText: "없음",
+  refuseItemText: "대답 거부",
+  dontKnowItemText: "모르다",
   selectAllItemText: "모두 선택",
   progressText: "페이지 {1} / {0}",
   indexText: "{0} / {1}",
@@ -116,9 +118,11 @@ surveyLocalization.localeNames["ko"] = "한국어";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "여기에 선택 항목을 끌어다 놓아 순위를 매깁니다."// takePhotoCaption: "Take Photo" => "사진 찍기"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "아래 버튼을 클릭하여 카메라로 사진을 찍습니다."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "업로드할 파일을 드래그 앤 드롭하거나 선택하거나 카메라를 사용하여 사진을 찍습니다."
-// replaceFileCaption: "Replace file" => "파일 바꾸기"// eachRowUniqueError: "Each row must have a unique value." => "각 행에는 고유한 값이 있어야 합니다."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "파일을 업로드할 수 없습니다. 'onUploadFiles'이벤트에 대한 핸들러를 추가하십시오."
-// showDetails: "Show Details" => "세부 정보 표시"
-// hideDetails: "Hide Details" => "세부 정보 숨기기"
-// ok: "OK" => "그래"
-// cancel: "Cancel" => "취소"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "파일 바꾸기"// eachRowUniqueError: "Each row must have a unique value." => "각 행에는 고유한 값이 있어야 합니다."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "파일을 업로드할 수 없습니다. 'onUploadFiles'이벤트에 대한 핸들러를 추가하십시오."
+// showDetails: "Show Details" => "세부 정보 표시"
+// hideDetails: "Hide Details" => "세부 정보 숨기기"
+// ok: "OK" => "그래"
+// cancel: "Cancel" => "취소"
+// refuseItemText: "Refuse to answer" => "대답 거부"
+// dontKnowItemText: "Don't know" => "모르다"
\ No newline at end of file
diff --git a/src/localization/latvian.ts b/src/localization/latvian.ts
index c95c994314..215972002b 100644
--- a/src/localization/latvian.ts
+++ b/src/localization/latvian.ts
@@ -9,6 +9,8 @@ export var latvianSurveyStrings = {
   startSurveyText: "Sākt",
   otherItemText: "Cits (lūdzu, aprakstiet!)",
   noneItemText: "Nav",
+  refuseItemText: "Atteikties atbildēt",
+  dontKnowItemText: "Es nezinu",
   selectAllItemText: "Izvēlēties visus",
   progressText: "{0}. lapa no {1}",
   indexText: "{0} no {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["lv"] = "latviešu";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Velciet un nometiet izvēles iespējas šeit, lai tās sarindotu"// takePhotoCaption: "Take Photo" => "Uzņemt fotoattēlu"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Noklikšķiniet uz pogas zemāk, lai uzņemtu fotoattēlu, izmantojot kameru."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Velciet un nometiet vai atlasiet failu, ko augšupielādēt vai uzņemt fotoattēlu, izmantojot kameru."
-// replaceFileCaption: "Replace file" => "Aizstāt failu"// eachRowUniqueError: "Each row must have a unique value." => "Katrai rindai jābūt unikālai vērtībai."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Failus nevar augšupielādēt. Lūdzu, pievienojiet apdarinātāju notikumam \"onUploadFiles\"."
-// showDetails: "Show Details" => "Rādīt detalizētu informāciju"
-// hideDetails: "Hide Details" => "Slēpt detaļas"
-// ok: "OK" => "LABI"
-// cancel: "Cancel" => "Atcelt"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Aizstāt failu"// eachRowUniqueError: "Each row must have a unique value." => "Katrai rindai jābūt unikālai vērtībai."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Failus nevar augšupielādēt. Lūdzu, pievienojiet apdarinātāju notikumam \"onUploadFiles\"."
+// showDetails: "Show Details" => "Rādīt detalizētu informāciju"
+// hideDetails: "Hide Details" => "Slēpt detaļas"
+// ok: "OK" => "LABI"
+// cancel: "Cancel" => "Atcelt"
+// refuseItemText: "Refuse to answer" => "Atteikties atbildēt"
+// dontKnowItemText: "Don't know" => "Es nezinu"
\ No newline at end of file
diff --git a/src/localization/lithuanian.ts b/src/localization/lithuanian.ts
index 127172c228..06367fe786 100644
--- a/src/localization/lithuanian.ts
+++ b/src/localization/lithuanian.ts
@@ -9,6 +9,8 @@ export var lithuaniaSurveyStrings = {
   startSurveyText: "Pradėti",
   otherItemText: "Kita (įvesti)",
   noneItemText: "Nėra",
+  refuseItemText: "Atsisakyti atsakyti",
+  dontKnowItemText: "Nežinau",
   selectAllItemText: "Pasirinkti visus",
   progressText: "Puslapis {0} iš {1}",
   indexText: "{1} {0}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["lt"] = "lietuvių";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Nuvilkite pasirinkimus čia, kad juos reitinguotumėte"// takePhotoCaption: "Take Photo" => "Fotografuoti"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Spustelėkite žemiau esantį mygtuką, kad nufotografuotumėte fotoaparatu."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Nuvilkite arba pasirinkite failą, kurį norite įkelti arba nufotografuoti naudodami fotoaparatą."
-// replaceFileCaption: "Replace file" => "Pakeiskite failą"// eachRowUniqueError: "Each row must have a unique value." => "Kiekviena eilutė turi turėti unikalią reikšmę."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Failų įkelti negalima. Pridėkite įvykio \"onUploadFiles\" tvarkytoją."
-// showDetails: "Show Details" => "Rodyti išsamią informaciją"
-// hideDetails: "Hide Details" => "Slėpti išsamią informaciją"
-// ok: "OK" => "GERAI"
-// cancel: "Cancel" => "Atšaukti"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Pakeiskite failą"// eachRowUniqueError: "Each row must have a unique value." => "Kiekviena eilutė turi turėti unikalią reikšmę."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Failų įkelti negalima. Pridėkite įvykio \"onUploadFiles\" tvarkytoją."
+// showDetails: "Show Details" => "Rodyti išsamią informaciją"
+// hideDetails: "Hide Details" => "Slėpti išsamią informaciją"
+// ok: "OK" => "GERAI"
+// cancel: "Cancel" => "Atšaukti"
+// refuseItemText: "Refuse to answer" => "Atsisakyti atsakyti"
+// dontKnowItemText: "Don't know" => "Nežinau"
\ No newline at end of file
diff --git a/src/localization/macedonian.ts b/src/localization/macedonian.ts
index c86fd65dca..5bd6612fe8 100644
--- a/src/localization/macedonian.ts
+++ b/src/localization/macedonian.ts
@@ -9,6 +9,8 @@ export var macedonianSurveyStrings = {
   startSurveyText: "Започнете",
   otherItemText: "Друго (опиши)",
   noneItemText: "Ништо",
+  refuseItemText: "Одбиј да одговориш.",
+  dontKnowItemText: "Не знам",
   selectAllItemText: "Селектирај се",
   progressText: "Страница {0} од {1}",
   indexText: "{0} на {1}",
@@ -123,9 +125,11 @@ surveyLocalization.localeNames["mk"] = "Македонски";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Влечете и фрлете го изборот овде за да ги рангирате"// takePhotoCaption: "Take Photo" => "Фотографирајте"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Кликнете на копчето подолу за да фотографирате користејќи ја камерата."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Влечете и фрлајте или изберете датотека за качување или фотографирање користејќи ја камерата."
-// replaceFileCaption: "Replace file" => "Заменете го фајлот."// eachRowUniqueError: "Each row must have a unique value." => "Секој ред мора да има уникатна вредност."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Фајловите не можат да се качуваат. Ве молиме додадете раководител за настанот 'onUploadFiles'."
-// showDetails: "Show Details" => "Прикажување на деталите"
-// hideDetails: "Hide Details" => "Сокриј ги деталите."
-// ok: "OK" => "ДОБРО"
-// cancel: "Cancel" => "Откажи"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Заменете го фајлот."// eachRowUniqueError: "Each row must have a unique value." => "Секој ред мора да има уникатна вредност."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Фајловите не можат да се качуваат. Ве молиме додадете раководител за настанот 'onUploadFiles'."
+// showDetails: "Show Details" => "Прикажување на деталите"
+// hideDetails: "Hide Details" => "Сокриј ги деталите."
+// ok: "OK" => "ДОБРО"
+// cancel: "Cancel" => "Откажи"
+// refuseItemText: "Refuse to answer" => "Одбиј да одговориш."
+// dontKnowItemText: "Don't know" => "Не знам"
\ No newline at end of file
diff --git a/src/localization/malay.ts b/src/localization/malay.ts
index a74d0f89bd..630140c290 100644
--- a/src/localization/malay.ts
+++ b/src/localization/malay.ts
@@ -9,6 +9,8 @@ export var malaySurveyStrings = {
   startSurveyText: "Mula",
   otherItemText: "Lain (terangkan)",
   noneItemText: "Tiada",
+  refuseItemText: "Enggan menjawab",
+  dontKnowItemText: "Tak tahu",
   selectAllItemText: "Pilih Semua",
   progressText: "Halaman {0} daripada {1}",
   indexText: "{0} {1}",
@@ -119,9 +121,11 @@ surveyLocalization.localeNames["ms"] = "melayu";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Seret dan lepaskan pilihan di sini untuk meletakkannya"// takePhotoCaption: "Take Photo" => "Ambil gambar"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klik butang di bawah untuk mengambil gambar menggunakan kamera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Seret dan lepas atau pilih fail untuk memuat naik atau mengambil foto menggunakan kamera."
-// replaceFileCaption: "Replace file" => "Gantikan fail"// eachRowUniqueError: "Each row must have a unique value." => "Setiap baris mesti mempunyai nilai yang unik."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Fail tidak boleh dimuat naik. Sila tambah pengendali untuk acara 'onUploadFiles'."
-// showDetails: "Show Details" => "Tunjukkan Butiran"
-// hideDetails: "Hide Details" => "Sembunyikan Butiran"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Batal"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Gantikan fail"// eachRowUniqueError: "Each row must have a unique value." => "Setiap baris mesti mempunyai nilai yang unik."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Fail tidak boleh dimuat naik. Sila tambah pengendali untuk acara 'onUploadFiles'."
+// showDetails: "Show Details" => "Tunjukkan Butiran"
+// hideDetails: "Hide Details" => "Sembunyikan Butiran"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Batal"
+// refuseItemText: "Refuse to answer" => "Enggan menjawab"
+// dontKnowItemText: "Don't know" => "Tak tahu"
\ No newline at end of file
diff --git a/src/localization/norwegian.ts b/src/localization/norwegian.ts
index c5c43b6267..65ce86b37d 100644
--- a/src/localization/norwegian.ts
+++ b/src/localization/norwegian.ts
@@ -9,6 +9,8 @@ export var norwegianSurveyStrings = {
   startSurveyText: "Start",
   otherItemText: "Annet (beskriv)",
   noneItemText: "Ingen",
+  refuseItemText: "Nekter å svare",
+  dontKnowItemText: "Vet ikke",
   selectAllItemText: "Velg alle",
   progressText: "Side {0} av {1}",
   indexText: "{0} av {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["no"] = "norsk";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Dra og slipp valg her for å rangere dem"// takePhotoCaption: "Take Photo" => "Ta bilde"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klikk på knappen nedenfor for å ta et bilde med kameraet."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Dra og slipp eller velg en fil for å laste opp eller ta et bilde med kameraet."
-// replaceFileCaption: "Replace file" => "Erstatt fil"// eachRowUniqueError: "Each row must have a unique value." => "Hver rad må ha en unik verdi."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan ikke lastes opp. Legg til et behandlingsprogram for onUploadFiles-hendelsen."
-// showDetails: "Show Details" => "Vis detaljer"
-// hideDetails: "Hide Details" => "Skjul detaljer"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Annullere"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Erstatt fil"// eachRowUniqueError: "Each row must have a unique value." => "Hver rad må ha en unik verdi."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan ikke lastes opp. Legg til et behandlingsprogram for onUploadFiles-hendelsen."
+// showDetails: "Show Details" => "Vis detaljer"
+// hideDetails: "Hide Details" => "Skjul detaljer"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Annullere"
+// refuseItemText: "Refuse to answer" => "Nekter å svare"
+// dontKnowItemText: "Don't know" => "Vet ikke"
\ No newline at end of file
diff --git a/src/localization/persian.ts b/src/localization/persian.ts
index ae5f2ea8be..4c95143762 100644
--- a/src/localization/persian.ts
+++ b/src/localization/persian.ts
@@ -9,6 +9,8 @@ export var persianSurveyStrings = {
   startSurveyText: "شروع",
   otherItemText: "دیگر(توضیح)",
   noneItemText: "هیچ",
+  refuseItemText: "امتناع از پاسخ دادن",
+  dontKnowItemText: "نمی دانم",
   selectAllItemText: "انتخاب همه",
   progressText: "صفحه {0} از {1}",
   indexText: "{0} {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["fa"] = "فارْسِى";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "انتخاب های کشیدن و رها کردن در اینجا برای رتبه بندی انها"// takePhotoCaption: "Take Photo" => "گرفتن عکس"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "روی دکمه زیر کلیک کنید تا با استفاده از دوربین عکس بگیرید."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "کشیدن و رها کردن یا انتخاب یک فایل برای اپلود یا گرفتن عکس با استفاده از دوربین."
-// replaceFileCaption: "Replace file" => "جایگزینی پرونده"// eachRowUniqueError: "Each row must have a unique value." => "هر سطر باید یک مقدار منحصر به فرد داشته باشد."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "پروندهها را نمیتوان بارگذاری کرد. لطفا یک گرداننده برای رویداد \"onUploadFiles\" اضافه کنید."
-// showDetails: "Show Details" => "نمایش جزئیات"
-// hideDetails: "Hide Details" => "مخفی کردن جزئیات"
-// ok: "OK" => "باشه"
-// cancel: "Cancel" => "لغو"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "جایگزینی پرونده"// eachRowUniqueError: "Each row must have a unique value." => "هر سطر باید یک مقدار منحصر به فرد داشته باشد."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "پروندهها را نمیتوان بارگذاری کرد. لطفا یک گرداننده برای رویداد \"onUploadFiles\" اضافه کنید."
+// showDetails: "Show Details" => "نمایش جزئیات"
+// hideDetails: "Hide Details" => "مخفی کردن جزئیات"
+// ok: "OK" => "باشه"
+// cancel: "Cancel" => "لغو"
+// refuseItemText: "Refuse to answer" => "امتناع از پاسخ دادن"
+// dontKnowItemText: "Don't know" => "نمی دانم"
\ No newline at end of file
diff --git a/src/localization/polish.ts b/src/localization/polish.ts
index d2386da2ce..1cd8bce587 100644
--- a/src/localization/polish.ts
+++ b/src/localization/polish.ts
@@ -9,6 +9,8 @@ export var polishSurveyStrings = {
   startSurveyText: "Start",
   otherItemText: "Inna odpowiedź (wpisz)",
   noneItemText: "Brak",
+  refuseItemText: "Odmów odpowiedzi",
+  dontKnowItemText: "Nie wiem",
   selectAllItemText: "Wybierz wszystkie",
   progressText: "Strona {0} z {1}",
   indexText: "{0} od {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["pl"] = "polski";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Przeciągnij i upuść tutaj wybory, aby je uszeregować"// takePhotoCaption: "Take Photo" => "Zrób zdjęcie"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kliknij przycisk poniżej, aby zrobić zdjęcie aparatem."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Przeciągnij i upuść lub wybierz plik, który chcesz przesłać lub zrobić zdjęcie za pomocą aparatu."
-// replaceFileCaption: "Replace file" => "Zastąp plik"// eachRowUniqueError: "Each row must have a unique value." => "Każdy wiersz musi mieć unikatową wartość."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Nie można przesłać plików. Dodaj moduł obsługi zdarzenia \"onUploadFiles\"."
-// showDetails: "Show Details" => "Pokaż szczegóły"
-// hideDetails: "Hide Details" => "Ukryj szczegóły"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Anuluj"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Zastąp plik"// eachRowUniqueError: "Each row must have a unique value." => "Każdy wiersz musi mieć unikatową wartość."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Nie można przesłać plików. Dodaj moduł obsługi zdarzenia \"onUploadFiles\"."
+// showDetails: "Show Details" => "Pokaż szczegóły"
+// hideDetails: "Hide Details" => "Ukryj szczegóły"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Anuluj"
+// refuseItemText: "Refuse to answer" => "Odmów odpowiedzi"
+// dontKnowItemText: "Don't know" => "Nie wiem"
\ No newline at end of file
diff --git a/src/localization/portuguese-br.ts b/src/localization/portuguese-br.ts
index e1aeb344a8..b210d2ea52 100644
--- a/src/localization/portuguese-br.ts
+++ b/src/localization/portuguese-br.ts
@@ -11,6 +11,8 @@ export var portugueseBrSurveyStrings = {
   startSurveyText: "Começar",
   otherItemText: "Outros (descrever)",
   noneItemText: "Nenhum",
+  refuseItemText: "Recusar-se a responder",
+  dontKnowItemText: "Não sei",
   selectAllItemText: "Selecionar tudo",
   progressText: "Página {0} de {1}",
   indexText: "{0} de {1}",
@@ -178,9 +180,11 @@ surveyLocalization.localeNames["pt-br"] = "português brasileiro";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Arraste e solte as opções aqui para classificá-las"// takePhotoCaption: "Take Photo" => "Tirar foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Clique no botão abaixo para tirar uma foto usando a câmera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Arraste e solte ou selecione um arquivo para carregar ou tirar uma foto usando a câmera."
-// replaceFileCaption: "Replace file" => "Substituir arquivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada linha deve ter um valor exclusivo."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Os arquivos não podem ser carregados. Adicione um manipulador para o evento 'onUploadFiles'."
-// showDetails: "Show Details" => "Mostrar detalhes"
-// hideDetails: "Hide Details" => "Ocultar detalhes"
-// ok: "OK" => "OKEY"
-// cancel: "Cancel" => "Cancelar"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Substituir arquivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada linha deve ter um valor exclusivo."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Os arquivos não podem ser carregados. Adicione um manipulador para o evento 'onUploadFiles'."
+// showDetails: "Show Details" => "Mostrar detalhes"
+// hideDetails: "Hide Details" => "Ocultar detalhes"
+// ok: "OK" => "OKEY"
+// cancel: "Cancel" => "Cancelar"
+// refuseItemText: "Refuse to answer" => "Recusar-se a responder"
+// dontKnowItemText: "Don't know" => "Não sei"
\ No newline at end of file
diff --git a/src/localization/portuguese.ts b/src/localization/portuguese.ts
index 4c69ce2ced..36ef9afa5a 100644
--- a/src/localization/portuguese.ts
+++ b/src/localization/portuguese.ts
@@ -9,6 +9,8 @@ export var portugueseSurveyStrings = {
   startSurveyText: "Começar",
   otherItemText: "Outros (descrever)",
   noneItemText: "Nenhum",
+  refuseItemText: "Recusar-se a responder",
+  dontKnowItemText: "Não sei",
   selectAllItemText: "Selecionar Todos",
   progressText: "Página {0} de {1}",
   indexText: "{0} de {1}",
@@ -114,9 +116,11 @@ surveyLocalization.localeNames["pt"] = "português";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Arraste e solte as opções aqui para classificá-las"// takePhotoCaption: "Take Photo" => "Tirar foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Clique no botão abaixo para tirar uma foto usando a câmera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Arraste e solte ou selecione um arquivo para carregar ou tirar uma foto usando a câmera."
-// replaceFileCaption: "Replace file" => "Substituir arquivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada linha deve ter um valor exclusivo."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Os arquivos não podem ser carregados. Adicione um manipulador para o evento 'onUploadFiles'."
-// showDetails: "Show Details" => "Mostrar detalhes"
-// hideDetails: "Hide Details" => "Ocultar detalhes"
-// ok: "OK" => "OKEY"
-// cancel: "Cancel" => "Cancelar"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Substituir arquivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada linha deve ter um valor exclusivo."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Os arquivos não podem ser carregados. Adicione um manipulador para o evento 'onUploadFiles'."
+// showDetails: "Show Details" => "Mostrar detalhes"
+// hideDetails: "Hide Details" => "Ocultar detalhes"
+// ok: "OK" => "OKEY"
+// cancel: "Cancel" => "Cancelar"
+// refuseItemText: "Refuse to answer" => "Recusar-se a responder"
+// dontKnowItemText: "Don't know" => "Não sei"
\ No newline at end of file
diff --git a/src/localization/romanian.ts b/src/localization/romanian.ts
index 3c8a49f64e..f7aa8583a8 100644
--- a/src/localization/romanian.ts
+++ b/src/localization/romanian.ts
@@ -9,6 +9,8 @@ export var romanianSurveyStrings: any = {
   startSurveyText: "start",
   otherItemText: "Altul(precizaţi)",
   noneItemText: "Nici unul",
+  refuseItemText: "Refuză să răspundă",
+  dontKnowItemText: "Nu ştiu",
   selectAllItemText: "Selectează tot",
   progressText: "Pagina {0} din {1}",
   indexText: "{0} de {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["ro"] = "română";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Glisați și fixați opțiunile aici pentru a le clasifica"// takePhotoCaption: "Take Photo" => "Faceți o fotografie"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Faceți clic pe butonul de mai jos pentru a face o fotografie folosind camera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Glisați și fixați sau selectați un fișier pentru a încărca sau a face o fotografie folosind camera."
-// replaceFileCaption: "Replace file" => "Înlocuire fișier"// eachRowUniqueError: "Each row must have a unique value." => "Fiecare rând trebuie să aibă o valoare unică."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Fișierele nu pot fi încărcate. Vă rugăm să adăugați un handler pentru evenimentul \"onUploadFiles\"."
-// showDetails: "Show Details" => "Arată detalii"
-// hideDetails: "Hide Details" => "Ascunde detalii"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Anula"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Înlocuire fișier"// eachRowUniqueError: "Each row must have a unique value." => "Fiecare rând trebuie să aibă o valoare unică."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Fișierele nu pot fi încărcate. Vă rugăm să adăugați un handler pentru evenimentul \"onUploadFiles\"."
+// showDetails: "Show Details" => "Arată detalii"
+// hideDetails: "Hide Details" => "Ascunde detalii"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Anula"
+// refuseItemText: "Refuse to answer" => "Refuză să răspundă"
+// dontKnowItemText: "Don't know" => "Nu ştiu"
\ No newline at end of file
diff --git a/src/localization/russian.ts b/src/localization/russian.ts
index 83e32f6ba1..c9ed236abb 100644
--- a/src/localization/russian.ts
+++ b/src/localization/russian.ts
@@ -9,6 +9,8 @@ export var russianSurveyStrings = {
   startSurveyText: "Начать",
   otherItemText: "Другое (пожалуйста, опишите)",
   noneItemText: "Нет",
+  refuseItemText: "Отказываюсь отвечать",
+  dontKnowItemText: "Не знаю",
   selectAllItemText: "Выбрать всё",
   progressText: "Страница {0} из {1}",
   indexText: "{0} из {1}",
@@ -96,10 +98,10 @@ export var russianSurveyStrings = {
   noEntriesText: "Пока нет записей.\nНажмите кнопку ниже, чтобы добавить новую запись.",
   noEntriesReadonlyText: "Записей нет.",
   more: "Больше",
-  tagboxDoneButtonCaption: "ХОРОШО",
+  tagboxDoneButtonCaption: "Хорошо",
   selectToRankEmptyRankedAreaText: "Все варианты ранжируются",
   selectToRankEmptyUnrankedAreaText: "Перетащите сюда варианты, чтобы ранжировать их",
-  ok: "ХОРОШО",
+  ok: "Хорошо",
   cancel: "Отмена"
 };
 
@@ -112,14 +114,12 @@ surveyLocalization.localeNames["ru"] = "русский";
 // emptyMessage: "No data to display" => "Нет данных для отображения"
 // noEntriesReadonlyText: "There are no entries." => "Записей нет."
 // more: "More" => "Больше"
-// tagboxDoneButtonCaption: "OK" => "ХОРОШО"
 // selectToRankEmptyRankedAreaText: "All choices are ranked" => "Все варианты ранжируются"
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Перетащите сюда варианты, чтобы ранжировать их"// takePhotoCaption: "Take Photo" => "Сделать фото"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Нажмите кнопку ниже, чтобы сделать снимок с помощью камеры."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Перетащите или выберите файл для загрузки или съемки с помощью камеры."
-// replaceFileCaption: "Replace file" => "Заменить файл"// eachRowUniqueError: "Each row must have a unique value." => "Каждая строка должна иметь уникальное значение."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файлы не могут быть загружены. Пожалуйста, добавьте обработчик для события 'onUploadFiles'."
-// showDetails: "Show Details" => "Показать подробности"
-// hideDetails: "Hide Details" => "Скрыть подробности"
-// ok: "OK" => "ХОРОШО"
+// replaceFileCaption: "Replace file" => "Заменить файл"// eachRowUniqueError: "Each row must have a unique value." => "Каждая строка должна иметь уникальное значение."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Файлы не могут быть загружены. Пожалуйста, добавьте обработчик для события 'onUploadFiles'."
+// showDetails: "Show Details" => "Показать подробности"
+// hideDetails: "Hide Details" => "Скрыть подробности"
 // cancel: "Cancel" => "Отмена"
\ No newline at end of file
diff --git a/src/localization/serbian.ts b/src/localization/serbian.ts
index 5eda76cc44..0285d237ad 100644
--- a/src/localization/serbian.ts
+++ b/src/localization/serbian.ts
@@ -9,6 +9,8 @@ export var serbianStrings = {
   startSurveyText: "Započni",
   otherItemText: "Drugo (upiši)",
   noneItemText: "Ništa",
+  refuseItemText: "Odbijanje odgovora",
+  dontKnowItemText: "Ne znam",
   selectAllItemText: "Izaberi sve",
   progressText: "Stranica {0} od {1}",
   indexText: "{0} {1}",
@@ -124,9 +126,11 @@ surveyLocalization.localeNames["rs"] = "Srpski";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Prevucite i otpustite izbor ovde da biste ih rangirali"// takePhotoCaption: "Take Photo" => "Fotografisanje"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kliknite na dugme ispod da biste snimili fotografiju pomoću fotoaparata."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Prevucite i otpustite ili izaberite datoteku za otpremanje ili snimanje fotografije pomoću fotoaparata."
-// replaceFileCaption: "Replace file" => "Zameni datoteku"// eachRowUniqueError: "Each row must have a unique value." => "Svaki red mora imati jedinstvenu vrednost."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Nije moguće otpremiti datoteke. Dodajte rukovaoca za događaj \"onUploadFiles\"."
-// showDetails: "Show Details" => "Prikaži detalje"
-// hideDetails: "Hide Details" => "Sakrij detalje"
-// ok: "OK" => "U redu"
-// cancel: "Cancel" => "Otkaži"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Zameni datoteku"// eachRowUniqueError: "Each row must have a unique value." => "Svaki red mora imati jedinstvenu vrednost."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Nije moguće otpremiti datoteke. Dodajte rukovaoca za događaj \"onUploadFiles\"."
+// showDetails: "Show Details" => "Prikaži detalje"
+// hideDetails: "Hide Details" => "Sakrij detalje"
+// ok: "OK" => "U redu"
+// cancel: "Cancel" => "Otkaži"
+// refuseItemText: "Refuse to answer" => "Odbijanje odgovora"
+// dontKnowItemText: "Don't know" => "Ne znam"
\ No newline at end of file
diff --git a/src/localization/simplified-chinese.ts b/src/localization/simplified-chinese.ts
index 4fcd06250f..9f3f07b36e 100644
--- a/src/localization/simplified-chinese.ts
+++ b/src/localization/simplified-chinese.ts
@@ -9,6 +9,8 @@ export var simplifiedChineseSurveyStrings = {
   startSurveyText: "开始问卷",
   otherItemText: "填写其他答案",
   noneItemText: "无",
+  refuseItemText: "拒绝回答",
+  dontKnowItemText: "不知道",
   selectAllItemText: "选择全部",
   progressText: "第 {0} 页, 共 {1} 页",
   indexText: "{1}{0}",
@@ -123,9 +125,11 @@ surveyLocalization.localeNames["zh-cn"] = "简体中文";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "将选项拖放到此处进行排名"// takePhotoCaption: "Take Photo" => "拍照"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "单击下面的按钮使用相机拍照。"
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "拖放或选择要上传的文件或使用相机拍摄照片。"
-// replaceFileCaption: "Replace file" => "替换文件"// eachRowUniqueError: "Each row must have a unique value." => "每行必须具有唯一值。"
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "无法上传文件。请为“onUploadFiles”事件添加处理程序。"
-// showDetails: "Show Details" => "显示详细信息"
-// hideDetails: "Hide Details" => "隐藏详细信息"
-// ok: "OK" => "还行"
-// cancel: "Cancel" => "取消"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "替换文件"// eachRowUniqueError: "Each row must have a unique value." => "每行必须具有唯一值。"
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "无法上传文件。请为“onUploadFiles”事件添加处理程序。"
+// showDetails: "Show Details" => "显示详细信息"
+// hideDetails: "Hide Details" => "隐藏详细信息"
+// ok: "OK" => "还行"
+// cancel: "Cancel" => "取消"
+// refuseItemText: "Refuse to answer" => "拒绝回答"
+// dontKnowItemText: "Don't know" => "不知道"
\ No newline at end of file
diff --git a/src/localization/slovak.ts b/src/localization/slovak.ts
index 2a4eee32b5..7cf3071246 100644
--- a/src/localization/slovak.ts
+++ b/src/localization/slovak.ts
@@ -9,6 +9,8 @@ export var slovakSurveyStrings = {
   startSurveyText: "Spustiť",
   otherItemText: "Iné (opíšte)",
   noneItemText: "Žiadne",
+  refuseItemText: "Odmietnuť odpovedať",
+  dontKnowItemText: "Neviem",
   selectAllItemText: "Vybrať všetky",
   progressText: "Strana {0} z {1}",
   indexText: "{0} {1}",
@@ -119,9 +121,11 @@ surveyLocalization.localeNames["sk"] = "slovenčina";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Presuňte sem voľby, aby ste ich zoradili"// takePhotoCaption: "Take Photo" => "Odfotiť"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Kliknutím na tlačidlo nižšie nasnímate fotografiu pomocou fotoaparátu."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Presuňte myšou alebo vyberte súbor, ktorý chcete nahrať alebo nasnímať fotografiu pomocou fotoaparátu."
-// replaceFileCaption: "Replace file" => "Nahradenie súboru"// eachRowUniqueError: "Each row must have a unique value." => "Každý riadok musí mať jedinečnú hodnotu."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Súbory nie je možné nahrať. Pridajte obslužný program pre udalosť \"onUploadFiles\"."
-// showDetails: "Show Details" => "Zobraziť podrobnosti"
-// hideDetails: "Hide Details" => "Skryť podrobnosti"
-// ok: "OK" => "OK"
-// cancel: "Cancel" => "Zrušiť"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Nahradenie súboru"// eachRowUniqueError: "Each row must have a unique value." => "Každý riadok musí mať jedinečnú hodnotu."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Súbory nie je možné nahrať. Pridajte obslužný program pre udalosť \"onUploadFiles\"."
+// showDetails: "Show Details" => "Zobraziť podrobnosti"
+// hideDetails: "Hide Details" => "Skryť podrobnosti"
+// ok: "OK" => "OK"
+// cancel: "Cancel" => "Zrušiť"
+// refuseItemText: "Refuse to answer" => "Odmietnuť odpovedať"
+// dontKnowItemText: "Don't know" => "Neviem"
\ No newline at end of file
diff --git a/src/localization/spanish.ts b/src/localization/spanish.ts
index 2180c73fca..83537ec9ec 100644
--- a/src/localization/spanish.ts
+++ b/src/localization/spanish.ts
@@ -9,6 +9,8 @@ export var spanishSurveyStrings = {
   startSurveyText: "Comienza",
   otherItemText: "Otro (describa)",
   noneItemText: "Ninguno",
+  refuseItemText: "Negarse a responder",
+  dontKnowItemText: "No sé",
   selectAllItemText: "Seleccionar todo",
   progressText: "Página {0} de {1}",
   indexText: "{0} de {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["es"] = "español";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Arrastra y suelta opciones aquí para clasificarlas"// takePhotoCaption: "Take Photo" => "Tomar foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Haga clic en el botón de abajo para tomar una foto con la cámara."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Arrastre y suelte o seleccione un archivo para cargar o tomar una foto con la cámara."
-// replaceFileCaption: "Replace file" => "Reemplazar archivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada fila debe tener un valor único."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Los archivos no se pueden cargar. Agregue un controlador para el evento 'onUploadFiles'."
-// showDetails: "Show Details" => "Mostrar detalles"
-// hideDetails: "Hide Details" => "Ocultar detalles"
-// ok: "OK" => "De acuerdo"
-// cancel: "Cancel" => "Cancelar"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Reemplazar archivo"// eachRowUniqueError: "Each row must have a unique value." => "Cada fila debe tener un valor único."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Los archivos no se pueden cargar. Agregue un controlador para el evento 'onUploadFiles'."
+// showDetails: "Show Details" => "Mostrar detalles"
+// hideDetails: "Hide Details" => "Ocultar detalles"
+// ok: "OK" => "De acuerdo"
+// cancel: "Cancel" => "Cancelar"
+// refuseItemText: "Refuse to answer" => "Negarse a responder"
+// dontKnowItemText: "Don't know" => "No sé"
\ No newline at end of file
diff --git a/src/localization/swahili.ts b/src/localization/swahili.ts
index 29a1f0b6f6..c5802170c6 100644
--- a/src/localization/swahili.ts
+++ b/src/localization/swahili.ts
@@ -9,6 +9,8 @@ export var swahiliStrings = {
   startSurveyText: "Anza",
   otherItemText: "Nyingine (eleza)",
   noneItemText: "Hakuna",
+  refuseItemText: "Kukataa kujibu",
+  dontKnowItemText: "Sijui",
   selectAllItemText: "Chagua Zote",
   progressText: "Ukurasa {0} wa {1}",
   indexText: "{0} ya {1}",
@@ -129,9 +131,11 @@ surveyLocalization.localeNames["sw"] = "swahili";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Buruta na uache uchaguzi hapa ili kuziorodhesha"// takePhotoCaption: "Take Photo" => "Chukua Picha"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Bonyeza kitufe hapa chini ili kupiga picha kwa kutumia kamera."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Drag na kuacha au kuchagua faili kupakia au kuchukua picha kwa kutumia kamera."
-// replaceFileCaption: "Replace file" => "Badilisha faili"// eachRowUniqueError: "Each row must have a unique value." => "Kila safu lazima iwe na thamani ya kipekee."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Faili haziwezi kupakiwa. Tafadhali ongeza kishiko kwa tukio la 'onUploadFiles'."
-// showDetails: "Show Details" => "Onyesha Maelezo"
-// hideDetails: "Hide Details" => "Ficha Maelezo"
-// ok: "OK" => "Sawa kabisa"
-// cancel: "Cancel" => "Katisha"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Badilisha faili"// eachRowUniqueError: "Each row must have a unique value." => "Kila safu lazima iwe na thamani ya kipekee."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Faili haziwezi kupakiwa. Tafadhali ongeza kishiko kwa tukio la 'onUploadFiles'."
+// showDetails: "Show Details" => "Onyesha Maelezo"
+// hideDetails: "Hide Details" => "Ficha Maelezo"
+// ok: "OK" => "Sawa kabisa"
+// cancel: "Cancel" => "Katisha"
+// refuseItemText: "Refuse to answer" => "Kukataa kujibu"
+// dontKnowItemText: "Don't know" => "Sijui"
\ No newline at end of file
diff --git a/src/localization/swedish.ts b/src/localization/swedish.ts
index 7d2ee91d20..7f73522184 100644
--- a/src/localization/swedish.ts
+++ b/src/localization/swedish.ts
@@ -9,6 +9,8 @@ export var swedishSurveyStrings = {
   startSurveyText: "Börja",
   otherItemText: "Annat (beskriv)",
   noneItemText: "Ingen",
+  refuseItemText: "Vägra svara",
+  dontKnowItemText: "Vet inte",
   selectAllItemText: "Välj alla",
   progressText: "Sida {0} av {1}",
   indexText: "{0} av {1}",
@@ -117,9 +119,11 @@ surveyLocalization.localeNames["sv"] = "svenska";
 // selectToRankEmptyUnrankedAreaText: "Drag and drop choices here to rank them" => "Dra och släpp val här för att rangordna dem"// takePhotoCaption: "Take Photo" => "Ta foto"
 // photoPlaceholder: "Click the button below to take a photo using the camera." => "Klicka på knappen nedan för att ta ett foto med kameran."
 // fileOrPhotoPlaceholder: "Drag and drop or select a file to upload or take a photo using the camera." => "Dra och släpp eller välj en fil att ladda upp eller ta ett foto med kameran."
-// replaceFileCaption: "Replace file" => "Ersätt fil"// eachRowUniqueError: "Each row must have a unique value." => "Varje rad måste ha ett unikt värde."
-// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan inte laddas upp. Lägg till en hanterare för händelsen 'onUploadFiles'."
-// showDetails: "Show Details" => "Detaljer"
-// hideDetails: "Hide Details" => "Göm detaljer"
-// ok: "OK" => "OKEJ"
-// cancel: "Cancel" => "Annullera"
\ No newline at end of file
+// replaceFileCaption: "Replace file" => "Ersätt fil"// eachRowUniqueError: "Each row must have a unique value." => "Varje rad måste ha ett unikt värde."
+// noUploadFilesHandler: "Files cannot be uploaded. Please add a handler for the 'onUploadFiles' event." => "Filer kan inte laddas upp. Lägg till en hanterare för händelsen 'onUploadFiles'."
+// showDetails: "Show Details" => "Detaljer"
+// hideDetails: "Hide Details" => "Göm detaljer"
+// ok: "OK" => "OKEJ"
+// cancel: "Cancel" => "Annullera"
+// refuseItemText: "Refuse to answer" => "Vägra svara"
+// dontKnowItemText: "Don't know" => "Vet inte"
\ No newline at end of file
diff --git a/src/localization/telugu.ts b/src/localization/telugu.ts
index ee6b2d2de8..d910eb4f20 100644
--- a/src/localization/telugu.ts
+++ b/src/localization/telugu.ts
@@ -9,6 +9,8 @@ export var teluguStrings = {
   startSurveyText: "ప్రారంభించు",
   otherItemText: "ఇతరమైన(వివరించండి)",
   noneItemText: "ఎవరు కాదు",
+  refuseItemText: "సమాధానం ఇవ్వడానికి నిరాకరించండి",
+  dontKnowItemText: "తెలియదు",
   selectAllItemText: "అన్ని ఎంచుకో",
   progressText: "పేజీ{0}/{1}",
   indexText: "{1} {0}[మార్చు]",
@@ -135,4 +137,5 @@ surveyLocalization.localeNames["tel"] = "Telugu";
 // showDetails: "Show Details" => "వివరాలు చూపించు"
 // hideDetails: "Hide Details" => "వివరాలను దాచండి"
 // ok: "OK" => "సరే"
-// cancel: "Cancel" => "రద్దు"
\ No newline at end of file
+// cancel: "Cancel" => "రద్దు"// refuseItemText: "Refuse to answer" => "సమాధానం ఇవ్వడానికి నిరాకరించండి"
+// dontKnowItemText: "Don't know" => "తెలియదు"
\ No newline at end of file
diff --git a/src/localization/thai.ts b/src/localization/thai.ts
index 3e39eb2919..21ed159538 100644
--- a/src/localization/thai.ts
+++ b/src/localization/thai.ts
@@ -9,6 +9,8 @@ export var thaiStrings = {
   startSurveyText: "เริ่ม",
   otherItemText: "อื่นๆ (โปรดระบุ)",
   noneItemText: "ไม่มี",
+  refuseItemText: "ปฏิเสธที่จะตอบ",
+  dontKnowItemText: "ไม่ทราบ",
   selectAllItemText: "เลือกทั้งหมด",
   progressText: "หน้าที่ {0} จาก {1}",
   indexText: "{0} of {1}",
@@ -134,4 +136,5 @@ surveyLocalization.localeNames["th"] = "ไทย";
 // showDetails: "Show Details" => "แสดงรายละเอียด"
 // hideDetails: "Hide Details" => "ซ่อนรายละเอียด"
 // ok: "OK" => "ตกลง, ได้"
-// cancel: "Cancel" => "ยกเลิก"
\ No newline at end of file
+// cancel: "Cancel" => "ยกเลิก"// refuseItemText: "Refuse to answer" => "ปฏิเสธที่จะตอบ"
+// dontKnowItemText: "Don't know" => "ไม่ทราบ"
\ No newline at end of file
diff --git a/src/localization/traditional-chinese.ts b/src/localization/traditional-chinese.ts
index 8e1d3e6daf..a1dcd87626 100644
--- a/src/localization/traditional-chinese.ts
+++ b/src/localization/traditional-chinese.ts
@@ -9,6 +9,8 @@ export var traditionalChineseSurveyStrings = {
   startSurveyText: "開始",
   otherItemText: "填寫其他答案",
   noneItemText: "沒有",
+  refuseItemText: "拒絕回答",
+  dontKnowItemText: "不知道",
   selectAllItemText: "全選",
   progressText: "第 {0} 頁, 共 {1} 頁",
   indexText: "{1}{0}",
@@ -169,4 +171,5 @@ surveyLocalization.localeNames["zh-tw"] = "繁體中文";
 // showDetails: "Show Details" => "顯示詳細資訊"
 // hideDetails: "Hide Details" => "隱藏詳細資訊"
 // ok: "OK" => "還行"
-// cancel: "Cancel" => "取消"
\ No newline at end of file
+// cancel: "Cancel" => "取消"// refuseItemText: "Refuse to answer" => "拒絕回答"
+// dontKnowItemText: "Don't know" => "不知道"
\ No newline at end of file
diff --git a/src/localization/turkish.ts b/src/localization/turkish.ts
index 2e8cc21902..c0929a9f89 100644
--- a/src/localization/turkish.ts
+++ b/src/localization/turkish.ts
@@ -9,6 +9,8 @@ export var turkishSurveyStrings = {
   startSurveyText: "Başlat",
   otherItemText: "Diğer (açıklayınız)",
   noneItemText: "Hiçbiri",
+  refuseItemText: "Cevap vermeyi reddet",
+  dontKnowItemText: "Bilmiyorum",
   selectAllItemText: "Tümünü Seç",
   progressText: "Sayfa {0}/{1}",
   indexText: "{0}/{1}",
@@ -116,4 +118,5 @@ surveyLocalization.localeNames["tr"] = "türkçe";
 // showDetails: "Show Details" => "Detayları göster"
 // hideDetails: "Hide Details" => "Detayları Gizle"
 // ok: "OK" => "TAMAM"
-// cancel: "Cancel" => "İptal"
\ No newline at end of file
+// cancel: "Cancel" => "İptal"// refuseItemText: "Refuse to answer" => "Cevap vermeyi reddet"
+// dontKnowItemText: "Don't know" => "Bilmiyorum"
\ No newline at end of file
diff --git a/src/localization/ukrainian.ts b/src/localization/ukrainian.ts
index 5a43adac1a..fa075a9f87 100644
--- a/src/localization/ukrainian.ts
+++ b/src/localization/ukrainian.ts
@@ -9,6 +9,8 @@ export var ukrainianSurveyStrings = {
   startSurveyText: "Почати",
   otherItemText: "Інше (будь ласка, опишіть)",
   noneItemText: "Жоден",
+  refuseItemText: "Відмовтеся відповідати",
+  dontKnowItemText: "Не знаю",
   selectAllItemText: "Вибрати все",
   progressText: "Сторінка {0} з {1}",
   indexText: "{0} {1}",
@@ -134,4 +136,5 @@ surveyLocalization.localeNames["ua"] = "українська";
 // showDetails: "Show Details" => "Показати подробиці"
 // hideDetails: "Hide Details" => "Сховати подробиці"
 // ok: "OK" => "ГАРАЗД"
-// cancel: "Cancel" => "Скасувати"
\ No newline at end of file
+// cancel: "Cancel" => "Скасувати"// refuseItemText: "Refuse to answer" => "Відмовтеся відповідати"
+// dontKnowItemText: "Don't know" => "Не знаю"
\ No newline at end of file
diff --git a/src/localization/urdu.ts b/src/localization/urdu.ts
index 40940fd104..c6f6ad309c 100644
--- a/src/localization/urdu.ts
+++ b/src/localization/urdu.ts
@@ -9,6 +9,8 @@ export var urduSurveyStrings = {
   startSurveyText: "شروع کریں",
   otherItemText: "دیگر (بیان کریں)",
   noneItemText: "کوئی نہیں",
+  refuseItemText: "جواب دینے سے انکار",
+  dontKnowItemText: "معلوم نہيں",
   selectAllItemText: "تمام منتخب کریں",
   progressText: "صفحہ {0} از {1}",
   indexText: "{1} کے {0}",
@@ -127,4 +129,5 @@ surveyLocalization.localeNames["ur"] = "Urdu";
 // showDetails: "Show Details" => "تفصیلات دکھائیں"
 // hideDetails: "Hide Details" => "تفصیلات چھپائیں"
 // ok: "OK" => "ٹھيک ہے"
-// cancel: "Cancel" => "منسوخ"
\ No newline at end of file
+// cancel: "Cancel" => "منسوخ"// refuseItemText: "Refuse to answer" => "جواب دینے سے انکار"
+// dontKnowItemText: "Don't know" => "معلوم نہيں"
\ No newline at end of file
diff --git a/src/localization/vietnamese.ts b/src/localization/vietnamese.ts
index ff6901eafb..77795fba02 100644
--- a/src/localization/vietnamese.ts
+++ b/src/localization/vietnamese.ts
@@ -9,6 +9,8 @@ export var vietnameseSurveyStrings = {
   startSurveyText: "Bắt đầu",
   otherItemText: "Khác (mô tả)",
   noneItemText: "Trống",
+  refuseItemText: "Từ chối trả lời",
+  dontKnowItemText: "Không biết",
   selectAllItemText: "Chọn tất cả",
   progressText: "Trang {0} / {1}",
   indexText: "{0} của {1}",
@@ -135,4 +137,5 @@ surveyLocalization.localeNames["vi"] = "Việt Nam";
 // showDetails: "Show Details" => "Hiển thị chi tiết"
 // hideDetails: "Hide Details" => "Ẩn chi tiết"
 // ok: "OK" => "OK"
-// cancel: "Cancel" => "Hủy"
\ No newline at end of file
+// cancel: "Cancel" => "Hủy"// refuseItemText: "Refuse to answer" => "Từ chối trả lời"
+// dontKnowItemText: "Don't know" => "Không biết"
\ No newline at end of file
diff --git a/src/localization/welsh.ts b/src/localization/welsh.ts
index 9e562bd836..3611bf143b 100644
--- a/src/localization/welsh.ts
+++ b/src/localization/welsh.ts
@@ -9,6 +9,8 @@ export var welshSurveyStrings = {
   startSurveyText: "Dechrau",
   otherItemText: "Arall (disgrifiwch)",
   noneItemText: "Dim",
+  refuseItemText: "Gwrthod ateb",
+  dontKnowItemText: "Ddim yn gwybod",
   selectAllItemText: "Dewis y Cyfan ",
   progressText: "Tudalen {0} o {1}",
   indexText: "{0} o {1}",
@@ -134,4 +136,5 @@ surveyLocalization.localeNames["cy"] = "cymraeg";
 // showDetails: "Show Details" => "Dangos manylion"
 // hideDetails: "Hide Details" => "Manylion Cuddio"
 // ok: "OK" => "OCÊ"
-// cancel: "Cancel" => "Canslo"
\ No newline at end of file
+// cancel: "Cancel" => "Canslo"// refuseItemText: "Refuse to answer" => "Gwrthod ateb"
+// dontKnowItemText: "Don't know" => "Ddim yn gwybod"
\ No newline at end of file
diff --git a/src/question_baseselect.ts b/src/question_baseselect.ts
index 751da0f1fe..9f157d43c8 100644
--- a/src/question_baseselect.ts
+++ b/src/question_baseselect.ts
@@ -29,7 +29,9 @@ export class QuestionSelectBase extends Question {
   private cachedValueForUrlRequests: any;
   private isChoicesLoaded: boolean;
   private enableOnLoadingChoices: boolean;
-  private noneItemValue: ItemValue = new ItemValue(settings.noneItemValue);
+  private noneItemValue: ItemValue;
+  private refuseItemValue: ItemValue;
+  private dontKnowItemValue: ItemValue;
   private newItemValue: ItemValue;
   private canShowOptionItemCallback: (item: ItemValue) => boolean;
   private waitingGetChoiceDisplayValueResponse: boolean;
@@ -42,10 +44,9 @@ export class QuestionSelectBase extends Question {
 
   constructor(name: string) {
     super(name);
-    var noneItemText = this.createLocalizableString("noneText", this.noneItemValue, true, "noneItemText");
-    this.noneItemValue.locOwner = this;
-    this.noneItemValue.setLocText(noneItemText);
-
+    this.noneItemValue = this.createDefaultItem(settings.noneItemValue, "noneText", "noneItemText");
+    this.refuseItemValue = this.createDefaultItem(settings.refuseItemValue, "refuseText", "refuseItemText");
+    this.dontKnowItemValue = this.createDefaultItem(settings.dontKnowItemValue, "dontKnowText", "dontKnowItemText");
     this.createItemValues("choices");
     this.registerPropertyChangedHandlers(["choices"], () => {
       if (!this.filterItems()) {
@@ -54,7 +55,7 @@ export class QuestionSelectBase extends Question {
     });
     this.registerPropertyChangedHandlers(
       ["choicesFromQuestion", "choicesFromQuestionMode", "choiceValuesFromQuestion",
-        "choiceTextsFromQuestion", "showNoneItem", "isUsingRestful", "isMessagePanelVisible"],
+        "choiceTextsFromQuestion", "showNoneItem", "showRefuseItem", "showDontKnowItem", "isUsingRestful", "isMessagePanelVisible"],
       () => {
         this.onVisibleChoicesChanged();
       }
@@ -183,7 +184,7 @@ export class QuestionSelectBase extends Question {
     return this.hasOther && this.getHasOther(this.renderedValue);
   }
   public get isNoneSelected(): boolean {
-    return this.hasNone && this.getIsItemValue(this.renderedValue, this.noneItem);
+    return this.showNoneItem && this.getIsItemValue(this.renderedValue, this.noneItem);
   }
   /**
    * Specifies whether to display the "None" choice item.
@@ -191,6 +192,7 @@ export class QuestionSelectBase extends Question {
    * When users select the "None" item in multi-select questions, all other items become unselected.
    * @see noneItem
    * @see noneText
+   * @see [settings.noneItemValue](https://surveyjs.io/form-library/documentation/api-reference/settings#noneItemValue)
    * @see [settings.specialChoicesOrder](https://surveyjs.io/form-library/documentation/api-reference/settings#specialChoicesOrder)
    */
   public get showNoneItem(): boolean {
@@ -225,6 +227,83 @@ export class QuestionSelectBase extends Question {
   get locNoneText(): LocalizableString {
     return this.getLocalizableString("noneText");
   }
+  /**
+   * Specifies whether to display the "Refuse to answer" choice item.
+   *
+   * When users select the "Refuse to answer" item in multi-select questions, all other items become unselected.
+   * @see refuseItem
+   * @see refuseItemText
+   * @see [settings.refuseItemValue](https://surveyjs.io/form-library/documentation/api-reference/settings#refuseItemValue)
+   * @see [settings.specialChoicesOrder](https://surveyjs.io/form-library/documentation/api-reference/settings#specialChoicesOrder)
+   */
+  public get showRefuseItem(): boolean {
+    return this.getPropertyValue("showRefuseItem");
+  }
+  public set showRefuseItem(val: boolean) {
+    this.setPropertyValue("showRefuseItem", val);
+  }
+  /**
+   * Returns the "Refuse to answer" choice item. Use this property to change the item's `value` or `text`.
+   * @see showRefuseItem
+   */
+  public get refuseItem(): ItemValue {
+    return this.refuseItemValue;
+  }
+  /**
+   * Gets or sets a caption for the "Refuse to answer" choice item.
+   * @see showRefuseItem
+   */
+  public get refuseText(): string {
+    return this.getLocalizableStringText("refuseText");
+  }
+  public set refuseText(val: string) {
+    this.setLocalizableStringText("refuseText", val);
+  }
+  get locRefuseText(): LocalizableString {
+    return this.getLocalizableString("refuseText");
+  }
+  /**
+   * Specifies whether to display the "Don't know" choice item.
+   *
+   * When users select the "Don't know" item in multi-select questions, all other items become unselected.
+   * @see dontKnowItem
+   * @see dontKnowItemText
+   * @see [settings.dontKnowItemValue](https://surveyjs.io/form-library/documentation/api-reference/settings#dontKnowItemValue)
+   * @see [settings.specialChoicesOrder](https://surveyjs.io/form-library/documentation/api-reference/settings#specialChoicesOrder)
+   */
+  public get showDontKnowItem(): boolean {
+    return this.getPropertyValue("showDontKnowItem");
+  }
+  public set showDontKnowItem(val: boolean) {
+    this.setPropertyValue("showDontKnowItem", val);
+  }
+  /**
+   * Returns the "Don't know" choice item. Use this property to change the item's `value` or `text`.
+   * @see showDontKnowItem
+   */
+  public get dontKnowItem(): ItemValue {
+    return this.dontKnowItemValue;
+  }
+  /**
+   * Gets or sets a caption for the "Don't know" choice item.
+   * @see showDontKnowItem
+   */
+  public get dontKnowText(): string {
+    return this.getLocalizableStringText("dontKnowText");
+  }
+  public set dontKnowText(val: string) {
+    this.setLocalizableStringText("dontKnowText", val);
+  }
+  get locDontKnowText(): LocalizableString {
+    return this.getLocalizableString("dontKnowText");
+  }
+  private createDefaultItem(defaultValue: any, name: string, locName: string): ItemValue {
+    const item = new ItemValue(defaultValue);
+    const locStr = this.createLocalizableString(name, item, true, locName);
+    item.locOwner = this;
+    item.setLocText(locStr);
+    return item;
+  }
   /**
    * A Boolean expression that is evaluated against each choice item. If the expression evaluates to `false`, the choice item becomes hidden.
    *
@@ -636,7 +715,9 @@ export class QuestionSelectBase extends Question {
   ): boolean {
     if (!checkEmptyValue && this.isValueEmpty(val)) return false;
     if (includeOther && val == this.otherItem.value) return false;
-    if (this.hasNone && val == this.noneItem.value) return false;
+    if (this.showNoneItem && val == this.noneItem.value) return false;
+    if (this.showRefuseItem && val == this.refuseItem.value) return false;
+    if (this.showDontKnowItem && val == this.dontKnowItem.value) return false;
     var choices = isFilteredChoices
       ? this.getFilteredChoices()
       : this.activeChoices;
@@ -904,7 +985,9 @@ export class QuestionSelectBase extends Question {
   protected canUseFilteredChoices(): boolean {
     return (
       !this.isAddDefaultItems &&
-      !this.hasNone &&
+      !this.showNoneItem &&
+      !this.showRefuseItem &&
+      !this.showDontKnowItem &&
       !this.hasOther &&
       this.choicesOrder == "none"
     );
@@ -952,19 +1035,23 @@ export class QuestionSelectBase extends Question {
     }
   }
   protected addNonChoicesItems(dict: Array<{ index: number, item: ItemValue }>, isAddAll: boolean): void {
-    if (
-      this.supportNone() && this.canShowOptionItem(this.noneItem, isAddAll, this.hasNone)
-    ) {
-      this.addNonChoiceItem(dict, this.noneItem, settings.specialChoicesOrder.noneItem);
+    if (this.supportNone()) {
+      this.addNonChoiceItem(dict, this.noneItem, isAddAll, this.showNoneItem, settings.specialChoicesOrder.noneItem);
     }
-    if (
-      this.supportOther() && this.canShowOptionItem(this.otherItem, isAddAll, this.hasOther)
-    ) {
-      this.addNonChoiceItem(dict, this.otherItem, settings.specialChoicesOrder.otherItem);
+    if (this.supportRefuse()) {
+      this.addNonChoiceItem(dict, this.refuseItem, isAddAll, this.showRefuseItem, settings.specialChoicesOrder.refuseItem);
+    }
+    if (this.supportDontKnow()) {
+      this.addNonChoiceItem(dict, this.dontKnowItem, isAddAll, this.showDontKnowItem, settings.specialChoicesOrder.dontKnowItem);
+    }
+    if(this.supportOther()) {
+      this.addNonChoiceItem(dict, this.otherItem, isAddAll, this.hasOther, settings.specialChoicesOrder.otherItem);
     }
   }
-  protected addNonChoiceItem(dict: Array<{ index: number, item: ItemValue }>, item: ItemValue, order: Array<number>): void {
-    order.forEach(val => dict.push({ index: val, item: item }));
+  protected addNonChoiceItem(dict: Array<{ index: number, item: ItemValue }>, item: ItemValue, isAddAll: boolean, showItem: boolean, order: Array<number>): void {
+    if(this.canShowOptionItem(item, isAddAll, showItem)) {
+      order.forEach(val => dict.push({ index: val, item: item }));
+    }
   }
   protected canShowOptionItem(item: ItemValue, isAddAll: boolean, hasItem: boolean): boolean {
     let res: boolean = (isAddAll && (!!this.canShowOptionItemCallback ? this.canShowOptionItemCallback(item) : true)) || hasItem;
@@ -976,7 +1063,9 @@ export class QuestionSelectBase extends Question {
   }
   public isItemInList(item: ItemValue): boolean {
     if (item === this.otherItem) return this.hasOther;
-    if (item === this.noneItem) return this.hasNone;
+    if (item === this.noneItem) return this.showNoneItem;
+    if (item === this.refuseItem) return this.showRefuseItem;
+    if (item === this.dontKnowItem) return this.showDontKnowItem;
     if (item === this.newItemValue) return false;
     return true;
   }
@@ -1157,7 +1246,7 @@ export class QuestionSelectBase extends Question {
           : undefined;
     const choices = question.visibleChoices;
     for (var i = 0; i < choices.length; i++) {
-      if (this.isBuiltInChoice(choices[i], question)) continue;
+      if (question.isBuiltInChoice(choices[i])) continue;
       if (isSelected === undefined) {
         res.push(this.copyChoiceItem(choices[i]));
         continue;
@@ -1184,16 +1273,20 @@ export class QuestionSelectBase extends Question {
       choices = this.visibleChoices;
     }
     for (var i = 0; i < choices.length; i++) {
-      if (!this.isBuiltInChoice(choices[i], this)) return true;
+      if (!this.isBuiltInChoice(choices[i])) return true;
     }
     return false;
   }
-  protected isBuiltInChoice(item: ItemValue, question: QuestionSelectBase): boolean {
-    return (
-      item === question.noneItem ||
-      item === question.otherItem ||
-      item === question.newItemValue
-    );
+  protected isBuiltInChoice(item: ItemValue): boolean {
+    return this.isNoneItem(item) ||
+      item === this.otherItem ||
+      item === this.newItemValue;
+  }
+  public isNoneItem(item: ItemValue): boolean {
+    return this.getNoneItems().indexOf(item) > -1;
+  }
+  protected getNoneItems(): Array<ItemValue> {
+    return [this.noneItem, this.refuseItem, this.dontKnowItem];
   }
   protected getChoices(): Array<ItemValue> {
     return this.choices;
@@ -1204,6 +1297,12 @@ export class QuestionSelectBase extends Question {
   public supportNone(): boolean {
     return this.isSupportProperty("showNoneItem");
   }
+  public supportRefuse(): boolean {
+    return this.isSupportProperty("showRefuseItem");
+  }
+  public supportDontKnow(): boolean {
+    return this.isSupportProperty("showDontKnowItem");
+  }
   protected isSupportProperty(propName: string): boolean {
     return (
       !this.isDesignMode ||
@@ -1644,7 +1743,7 @@ export class QuestionSelectBase extends Question {
     return res;
   }
   get dataChoices(): ItemValue[] {
-    return this.visibleChoices.filter((item) => !this.isBuiltInChoice(item, this));
+    return this.visibleChoices.filter((item) => !this.isBuiltInChoice(item));
   }
   get bodyItems(): ItemValue[] {
     return (this.hasHeadItems || this.hasFootItems) ? this.dataChoices : this.visibleChoices;
@@ -1929,6 +2028,8 @@ Serializer.addClass(
     { name: "separateSpecialChoices:boolean", visible: false },
     { name: "showOtherItem:boolean", alternativeName: "hasOther" },
     { name: "showNoneItem:boolean", alternativeName: "hasNone" },
+    { name: "showRefuseItem:boolean", visible: false },
+    { name: "showDontKnowItem:boolean", visible: false },
     {
       name: "otherPlaceholder",
       alternativeName: "otherPlaceHolder",
@@ -1943,7 +2044,23 @@ Serializer.addClass(
       serializationProperty: "locNoneText",
       dependsOn: "showNoneItem",
       visibleIf: function (obj: any) {
-        return obj.hasNone;
+        return obj.showNoneItem;
+      },
+    },
+    {
+      name: "refuseText",
+      serializationProperty: "locRefuseText",
+      dependsOn: "showRefuseItem",
+      visibleIf: function (obj: any) {
+        return obj.showRefuseItem;
+      },
+    },
+    {
+      name: "dontKnowText",
+      serializationProperty: "locDontKnowText",
+      dependsOn: "showDontKnowItem",
+      visibleIf: function (obj: any) {
+        return obj.showDontKnowItem;
       },
     },
     {
diff --git a/src/question_checkbox.ts b/src/question_checkbox.ts
index 1a96025d57..0249cc529d 100644
--- a/src/question_checkbox.ts
+++ b/src/question_checkbox.ts
@@ -115,7 +115,10 @@ export class QuestionCheckboxModel extends QuestionCheckboxBase {
    * @see showSelectAllItem
    */
   public get isAllSelected(): boolean {
-    if (this.isItemSelected(this.noneItem)) return false;
+    const noneItems = this.getNoneItems();
+    for(let i = 0; i < noneItems.length; i ++) {
+      if(this.isItemSelected(noneItems[i])) return false;
+    }
     const items = this.getVisibleEnableItems();
     if(items.length === 0) return false;
     const val = this.value;
@@ -162,18 +165,22 @@ export class QuestionCheckboxModel extends QuestionCheckboxBase {
         this.toggleSelectAll();
       }
     } else {
-      const newValue: Array<any> = [].concat(this.renderedValue || []);
-      const index = newValue.indexOf(item.value);
-      if (checked) {
-        if (index < 0) {
-          newValue.push(item.value);
-        }
+      if(this.isNoneItem(item)) {
+        this.renderedValue = [item.value];
       } else {
-        if (index > -1) {
-          newValue.splice(index, 1);
+        const newValue: Array<any> = [].concat(this.renderedValue || []);
+        const index = newValue.indexOf(item.value);
+        if (checked) {
+          if (index < 0) {
+            newValue.push(item.value);
+          }
+        } else {
+          if (index > -1) {
+            newValue.splice(index, 1);
+          }
         }
+        this.renderedValue = newValue;
       }
-      this.renderedValue = newValue;
     }
   }
   protected isItemSelectedCore(item: ItemValue): boolean {
@@ -374,20 +381,7 @@ export class QuestionCheckboxModel extends QuestionCheckboxBase {
     if (!newValue) newValue = [];
     if (!value) value = [];
     if (this.isTwoValueEquals(value, newValue)) return;
-    if (this.hasNone) {
-      var prevNoneIndex = this.noneIndexInArray(value);
-      var newNoneIndex = this.noneIndexInArray(newValue);
-      if (prevNoneIndex > -1) {
-        if (newNoneIndex > -1 && newValue.length > 1) {
-          newValue.splice(newNoneIndex, 1);
-        }
-      } else {
-        if (newNoneIndex > -1) {
-          newValue.splice(0, newValue.length);
-          newValue.push(this.noneItem.value);
-        }
-      }
-    }
+    this.removeNoneItemsValues(value, newValue);
     super.setNewValue(newValue);
   }
   protected getIsMultipleValue(): boolean {
@@ -411,30 +405,56 @@ export class QuestionCheckboxModel extends QuestionCheckboxBase {
     }
     return -1;
   }
-  private noneIndexInArray(val: any) {
-    if (!val || !Array.isArray(val)) return -1;
-    var noneValue = this.noneItem.value;
-    for (var i = 0; i < val.length; i++) {
-      if (val[i] == noneValue) return i;
+  protected removeNoneItemsValues(value: Array<any>, newValue: Array<any>): void {
+    const noneValues: Array<any> = [];
+    if(this.showNoneItem) noneValues.push(this.noneItem.value);
+    if(this.showRefuseItem) noneValues.push(this.refuseItem.value);
+    if(this.showDontKnowItem) noneValues.push(this.dontKnowItem.value);
+    if (noneValues.length > 0) {
+      const prevNone = this.noneIndexInArray(value, noneValues);
+      const newNone = this.noneIndexInArray(newValue, noneValues);
+      if(prevNone.index > -1) {
+        if(prevNone.val === newNone.val) {
+          if(newValue.length > 0) {
+            newValue.splice(newNone.index, 1);
+          }
+        } else {
+          const prevNewNone = this.noneIndexInArray(newValue, [prevNone.val]);
+          if(prevNewNone.index > -1 && prevNewNone.index < newValue.length - 1) {
+            newValue.splice(prevNewNone.index, 1);
+          }
+        }
+      } else {
+        if (newNone.index > -1 && newValue.length > 1) {
+          const itemVal = this.convertValueToObject([newNone.val])[0];
+          newValue.splice(0, newValue.length, itemVal);
+        }
+      }
     }
-    return -1;
+  }
+
+  private noneIndexInArray(val: any, noneValues: Array<any>): { index: number, val: any } {
+    if (!Array.isArray(val)) return { index: -1, val: undefined };
+    for (var i = val.length - 1; i >= 0; i--) {
+      const index = noneValues.indexOf(this.getRealValue(val[i]));
+      if (index > -1) return { index: i, val: noneValues[index] };
+    }
+    return { index: -1, val: undefined };
   }
   protected canUseFilteredChoices(): boolean {
     return !this.hasSelectAll && super.canUseFilteredChoices();
   }
-  protected supportSelectAll() {
+  protected supportSelectAll(): boolean {
     return this.isSupportProperty("showSelectAllItem");
   }
   protected addNonChoicesItems(dict: Array<{ index: number, item: ItemValue }>, isAddAll: boolean): void {
     super.addNonChoicesItems(dict, isAddAll);
-    if (
-      this.supportSelectAll() && this.canShowOptionItem(this.selectAllItem, isAddAll, this.hasSelectAll)
-    ) {
-      this.addNonChoiceItem(dict, this.selectAllItem, settings.specialChoicesOrder.selectAllItem);
+    if (this.supportSelectAll()) {
+      this.addNonChoiceItem(dict, this.selectAllItem, isAddAll, this.hasSelectAll, settings.specialChoicesOrder.selectAllItem);
     }
   }
-  protected isBuiltInChoice(item: ItemValue, question: QuestionSelectBase): boolean {
-    return item === (<QuestionCheckboxBase>question).selectAllItem || super.isBuiltInChoice(item, question);
+  protected isBuiltInChoice(item: ItemValue): boolean {
+    return item === this.selectAllItem || super.isBuiltInChoice(item);
   }
 
   public isItemInList(item: ItemValue): boolean {
diff --git a/src/question_imagepicker.ts b/src/question_imagepicker.ts
index f4e3b87cbf..62d0c623ee 100644
--- a/src/question_imagepicker.ts
+++ b/src/question_imagepicker.ts
@@ -107,12 +107,10 @@ export class QuestionImagePickerModel extends QuestionCheckboxBase {
   public get isCompositeQuestion(): boolean {
     return true;
   }
-  public supportOther(): boolean {
-    return false;
-  }
-  public supportNone(): boolean {
-    return false;
-  }
+  public supportOther(): boolean { return false; }
+  public supportNone(): boolean { return false; }
+  public supportRefuse(): boolean { return false; }
+  public supportDontKnow(): boolean { return false; }
   public isAnswerCorrect(): boolean {
     if (!this.multiSelect) return super.isAnswerCorrect();
     return Helpers.isArrayContainsEqual(this.value, this.correctAnswer);
@@ -291,7 +289,7 @@ export class QuestionImagePickerModel extends QuestionCheckboxBase {
     return this.multiSelect ? "checkbox" : "radio";
   }
 
-  protected isBuiltInChoice(item: ItemValue, question: QuestionSelectBase): boolean {
+  protected isBuiltInChoice(item: ItemValue): boolean {
     return false;
   }
   protected addToVisibleChoices(items: Array<ItemValue>, isAddAll: boolean): void {
@@ -442,6 +440,8 @@ Serializer.addClass(
     { name: "showOtherItem", visible: false },
     { name: "otherText", visible: false },
     { name: "showNoneItem", visible: false },
+    { name: "showRefuseItem", visible: false },
+    { name: "showDontKnowItem", visible: false },
     { name: "noneText", visible: false },
     { name: "optionsCaption", visible: false },
     { name: "otherErrorText", visible: false },
diff --git a/src/question_ranking.ts b/src/question_ranking.ts
index a508668670..6ec31a9d8c 100644
--- a/src/question_ranking.ts
+++ b/src/question_ranking.ts
@@ -368,15 +368,11 @@ export class QuestionRankingModel extends QuestionCheckboxModel {
     }
   };
 
-  protected supportSelectAll(): boolean {
-    return false;
-  }
-  public supportOther(): boolean {
-    return false;
-  }
-  public supportNone(): boolean {
-    return false;
-  }
+  protected supportSelectAll(): boolean { return false; }
+  public supportOther(): boolean { return false; }
+  public supportNone(): boolean { return false; }
+  public supportRefuse(): boolean { return false; }
+  public supportDontKnow(): boolean { return false; }
 
   private handleArrowKeys = (index: number, choice: ItemValue, isDown: boolean) => {
     const delta = isDown ? 1 : -1;
@@ -566,6 +562,8 @@ Serializer.addClass(
     { name: "otherErrorText", visible: false, isSerializable: false },
     { name: "storeOthersAsComment", visible: false, isSerializable: false },
     { name: "showNoneItem", visible: false, isSerializable: false },
+    { name: "showRefuseItem", visible: false, isSerializable: false },
+    { name: "showDontKnowItem", visible: false, isSerializable: false },
     { name: "noneText", visible: false, isSerializable: false },
     { name: "showSelectAllItem", visible: false, isSerializable: false },
     { name: "selectAllText", visible: false, isSerializable: false },
diff --git a/src/settings.ts b/src/settings.ts
index 4a1940a640..9f2afba260 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -510,15 +510,27 @@ export var settings = {
    */
   showItemsInOrder: "default",
   /**
-   * A value to save in survey results when respondents select the None choice item.
+   * A value to save in survey results when respondents select the "None" choice item.
    *
    * Default value: `"none"`
    */
   noneItemValue: "none",
   /**
-   * An object whose properties specify the order of the special choice items (None, Other, Select All) in select-based questions.
+   * A value to save in survey results when respondents select the "Refuse to answer" choice item.
    *
-   * Default value: `{ selectAllItem: [-1], noneItem: [1], otherItem: [2] }`
+   * Default value: `"refused"`
+   */
+  refuseItemValue: "refused",
+  /**
+   * A value to save in survey results when respondents select the "Don't know" choice item.
+   *
+   * Default value: `"dontknow"`
+   */
+  dontKnowItemValue: "dontknow",
+  /**
+   * An object whose properties specify the order of the special choice items ("None", "Other", "Select All", "Refuse to answer", "Don't know") in select-based questions.
+   *
+   * Default value: `{ selectAllItem: [-1], noneItem: [1], otherItem: [2], dontKnowItem: [3], otherItem: [4] }`
    *
    * Use this object to reorder special choices. Each property accepts an array of integer numbers. Negative numbers place a special choice item above regular choice items, positive numbers place it below them. For instance, the code below specifies the following order of choices: None, Select All, regular choices, Other.
    *
@@ -539,7 +551,9 @@ export var settings = {
   specialChoicesOrder: {
     selectAllItem: [-1],
     noneItem: [1],
-    otherItem: [2]
+    refuseItem: [2],
+    dontKnowItem: [3],
+    otherItem: [4]
   },
   /**
    * A list of supported validators by question type.
diff --git a/tests/paneltests.ts b/tests/paneltests.ts
index 01d44d028e..c5da3b5526 100644
--- a/tests/paneltests.ts
+++ b/tests/paneltests.ts
@@ -1178,7 +1178,7 @@ QUnit.test(
           "name": "cars",
           "title": "Dropdown",
 
-          "hasNone": true,
+          "showNoneItem": true,
           "colCount": 4,
           "choices": [
             "Ford",
@@ -1198,7 +1198,7 @@ QUnit.test(
           "title": "Checkbox",
 
           "hasSelectAll": true,
-          "hasNone": true,
+          "showNoneItem": true,
           "colCount": 4,
           "choices": [
             "Ford",
diff --git a/tests/questionDropdownTests.ts b/tests/questionDropdownTests.ts
index 8a4b79a109..b2d9e77265 100644
--- a/tests/questionDropdownTests.ts
+++ b/tests/questionDropdownTests.ts
@@ -370,7 +370,7 @@ QUnit.test("readOnlyText default", assert => {
         "name": "q1",
         "placeholder": "click",
         "hasOther": true,
-        "hasNone": true,
+        "showNoneItem": true,
         "choices": [{ value: 1, text: "item 1" }, { value: 2, text: "item 2" }, { value: 3, text: "item 3" }]
       }]
   };
diff --git a/tests/question_baseselecttests.ts b/tests/question_baseselecttests.ts
index 109bda0ef7..192fd2a03b 100644
--- a/tests/question_baseselecttests.ts
+++ b/tests/question_baseselecttests.ts
@@ -136,6 +136,65 @@ QUnit.test("Check QuestionSelectBase head and foot items property", function (as
   settings.supportCreatorV2 = false;
 });
 
+QUnit.test("Check QuestionSelectBase head and foot items property vs refuse and dontknow properties", function (assert) {
+  const refuseProp = Serializer.findProperty("selectbase", "showRefuseItem");
+  const dontKnowProp = Serializer.findProperty("selectbase", "showDontKnowItem");
+  refuseProp.visible = true;
+  dontKnowProp.visible = true;
+  const json = {
+    questions: [
+      {
+        type: "checkbox",
+        name: "Question 1",
+        choices: ["Item1", "Item2", "Item3", "Item4", "Item5"],
+        colCount: 3,
+      },
+    ],
+  };
+  const survey = new SurveyModel(json);
+
+  var question = <QuestionSelectBase>survey.getAllQuestions()[0];
+  assert.notOk(question.hasHeadItems);
+  assert.notOk(question.hasFootItems);
+
+  settings.showItemsInOrder = "column";
+  let columns = getValuesInColumns(question);
+  assert.deepEqual(
+    columns,
+    [["Item1", "Item2"], ["Item3", "Item4"], ["Item5"]],
+    "check showItemsBy col - runtime"
+  );
+
+  survey.setDesignMode(true);
+  settings.supportCreatorV2 = true;
+  (<any>question).updateVisibleChoices();
+  assert.ok(question.hasHeadItems);
+  assert.ok(question.hasFootItems);
+  columns = getValuesInColumns(question);
+  assert.deepEqual(
+    columns,
+    [["Item1", "Item2"], ["Item3", "Item4"], ["Item5"]],
+    "check showItemsBy col - design"
+  );
+  let headItems = question.headItems.map((item) => item.id);
+  let footItems = question.footItems.map((item) => item.id);
+
+  assert.deepEqual(
+    headItems,
+    ["selectall"],
+    "check head items"
+  );
+  assert.deepEqual(
+    footItems,
+    ["newitem", "none", "refused", "dontknow", "other"],
+    "check foot items"
+  );
+  settings.showItemsInOrder = "row";
+  settings.supportCreatorV2 = false;
+  refuseProp.visible = false;
+  dontKnowProp.visible = false;
+});
+
 QUnit.test("Check QuestionSelectBase and separateSpecialChoices option", function (assert) {
   var json = {
     questions: [
@@ -145,7 +204,7 @@ QUnit.test("Check QuestionSelectBase and separateSpecialChoices option", functio
         choices: ["Item1", "Item2"],
         hasOther: true,
         hasSelectAll: true,
-        hasNone: true,
+        showNoneItem: true,
         colCount: 2
       },
     ],
@@ -318,7 +377,7 @@ QUnit.test("check onShowingChoiceItem event", (assert) => {
         type: "radiogroup",
         name: "q1",
         choices: [{ value: "Item1", visibleIf: "1 = 2" }, "Item2", "Item3"],
-        hasNone: true,
+        showNoneItem: true,
         hasOther: true
       }]
   });
@@ -339,6 +398,38 @@ QUnit.test("check onShowingChoiceItem event", (assert) => {
   assert.equal(question.visibleChoices[0].value, "Item1");
   assert.equal(question.visibleChoices[1].value, "Item2");
 });
+QUnit.test("check onShowingChoiceItem event & showRefuseItem & showDontKnowItem", (assert) => {
+  const survey = new SurveyModel({
+    questions: [
+      {
+        type: "radiogroup",
+        name: "q1",
+        choices: [{ value: "Item1", visibleIf: "1 = 2" }, "Item2", "Item3"],
+        showNoneItem: true,
+        showRefuseItem: true,
+        showDontKnowItem: true,
+        hasOther: true
+      }]
+  });
+
+  const question = <QuestionRadiogroupModel>survey.getQuestionByName("q1");
+  assert.equal(question.visibleChoices.length, 6);
+  assert.equal(question.visibleChoices[0].value, "Item2");
+  assert.equal(question.visibleChoices[1].value, "Item3");
+  assert.equal(question.visibleChoices[2].value, "none");
+  assert.equal(question.visibleChoices[3].value, "refused");
+  assert.equal(question.visibleChoices[4].value, "dontknow");
+  assert.equal(question.visibleChoices[5].value, "other");
+
+  survey.onShowingChoiceItem.add((sender, options) => {
+    if (options.question.name !== "q1") return;
+    options.visible = ["Item1", "Item2"].indexOf(options.item.value) > -1;
+  });
+
+  assert.equal(question.visibleChoices.length, 2);
+  assert.equal(question.visibleChoices[0].value, "Item1");
+  assert.equal(question.visibleChoices[1].value, "Item2");
+});
 
 QUnit.test("check focus comment of other select", (assert) => {
   const survey = new SurveyModel({
@@ -492,7 +583,7 @@ QUnit.test("checkbox vs valuePropertyName, check selectAll and none", (assert) =
         name: "q1",
         choices: ["apple", "banana", "orange"],
         valuePropertyName: "fruit",
-        hasNone: true,
+        showNoneItem: true,
         hasSelectAll: true
       }
     ]
@@ -502,10 +593,59 @@ QUnit.test("checkbox vs valuePropertyName, check selectAll and none", (assert) =
   assert.deepEqual(q.renderedValue, ["apple", "banana", "orange"], "#1");
   assert.deepEqual(q.value, [{ fruit: "apple" }, { fruit: "banana" }, { fruit: "orange" }], "#2");
   assert.equal(q.isAllSelected, true, "#3, all is selected");
-  q.renderedValue = ["none"];
+  q.clickItemHandler(q.noneItem, true);
   assert.deepEqual(q.value, [{ fruit: "none" }], "#4");
   assert.equal(q.isAllSelected, false, "#5, all is not selected");
 });
+QUnit.test("checkbox vs valuePropertyName, check selectAll and none & refuse & dontknow", (assert) => {
+  const survey = new SurveyModel({
+    elements: [
+      {
+        type: "checkbox",
+        name: "q1",
+        choices: ["apple", "banana", "orange"],
+        valuePropertyName: "fruit",
+        showNoneItem: true,
+        showRefuseItem: true,
+        showDontKnowItem: true,
+        hasSelectAll: true
+      }
+    ]
+  });
+  const q = <QuestionCheckboxModel>survey.getQuestionByName("q1");
+  q.toggleSelectAll();
+  assert.deepEqual(q.renderedValue, ["apple", "banana", "orange"], "#1");
+  assert.deepEqual(q.value, [{ fruit: "apple" }, { fruit: "banana" }, { fruit: "orange" }], "#2");
+  assert.equal(q.isAllSelected, true, "#3, all is selected");
+  q.clickItemHandler(q.refuseItem, true);
+  assert.deepEqual(q.value, [{ fruit: "refused" }], "#4");
+  assert.equal(q.isAllSelected, false, "#5, all is not selected");
+  q.clickItemHandler(q.selectAllItem, true);
+  assert.deepEqual(q.renderedValue, ["apple", "banana", "orange"], "#6");
+  q.clickItemHandler(q.dontKnowItem, true);
+  assert.deepEqual(q.value, [{ fruit: "dontknow" }], "#7");
+  q.clickItemHandler(q.refuseItem, true);
+  assert.deepEqual(q.value, [{ fruit: "refused" }], "#8");
+  q.clickItemHandler(q.noneItem, true);
+  assert.deepEqual(q.value, [{ fruit: "none" }], "#9");
+  q.clickItemHandler(q.choices[0], true);
+  assert.deepEqual(q.value, [{ fruit: "apple" }], "#10");
+  q.renderedValue = ["refused"];
+  assert.deepEqual(q.value, [{ fruit: "refused" }], "#11");
+  q.clickItemHandler(q.choices[0], true);
+  assert.deepEqual(q.value, [{ fruit: "apple" }], "#12");
+
+  q.renderedValue = ["apple", "none"];
+  assert.deepEqual(q.value, [{ fruit: "none" }], "#13");
+  q.renderedValue = ["none", "refused"];
+  assert.deepEqual(q.value, [{ fruit: "refused" }], "#14");
+  q.renderedValue = ["refused", "dontknow"];
+  assert.deepEqual(q.value, [{ fruit: "dontknow" }], "#15");
+  q.renderedValue = ["dontknow", "none"];
+  assert.deepEqual(q.value, [{ fruit: "none" }], "#16");
+  q.renderedValue = ["none", "apple"];
+  assert.deepEqual(q.value, [{ fruit: "apple" }], "#17");
+});
 QUnit.test("checkbox vs valuePropertyName, check hasOther", (assert) => {
   const survey = new SurveyModel({
     elements: [
@@ -630,7 +770,7 @@ QUnit.test("checkbox and radio css", (assert) => {
         type: "radiogroup",
         name: "q1",
         choices: ["Item 1"],
-        hasNone: true
+        showNoneItem: true
       },
       {
         type: "checkbox",
@@ -638,7 +778,7 @@ QUnit.test("checkbox and radio css", (assert) => {
         choices: ["Item 1"],
         showClearButton: true,
         hasSelectAll: true,
-        hasNone: true
+        showNoneItem: true
       }]
   });
   let question1 = <QuestionRadiogroupModel>survey.getAllQuestions()[0];
@@ -787,7 +927,7 @@ QUnit.test("check locOwner for items", (assert) => {
 
 QUnit.test("check renamed has... properties", (assert) => {
   const question = new QuestionCheckboxModel("q1");
-  assert.notOk(question.hasNone);
+  assert.notOk(question.showNoneItem);
   assert.notOk(question.hasSelectAll);
   assert.notOk(question.hasOther);
   assert.notOk(question.hasComment);
@@ -799,10 +939,10 @@ QUnit.test("check renamed has... properties", (assert) => {
 
   question.showNoneItem = true;
   assert.ok(question.showNoneItem);
-  assert.ok(question.hasNone);
-  question.hasNone = false;
+  assert.ok(question.showNoneItem);
+  question.showNoneItem = false;
+  assert.notOk(question.showNoneItem);
   assert.notOk(question.showNoneItem);
-  assert.notOk(question.hasNone);
 
   question.showSelectAllItem = true;
   assert.ok(question.showSelectAllItem);
@@ -1435,7 +1575,7 @@ QUnit.test("SelectBase visibleChoices for selectAll, none and showOtherItem", fu
   assert.equal(choices[4].value, "none", "none index #1");
   assert.equal(choices[5].value, "other", "other index #1");
 
-  settings.specialChoicesOrder.noneItem = [3];
+  settings.specialChoicesOrder.noneItem = [5];
   question.showNoneItem = false;
   question.showNoneItem = true;
   choices = question.visibleChoices;
@@ -1444,7 +1584,7 @@ QUnit.test("SelectBase visibleChoices for selectAll, none and showOtherItem", fu
   assert.equal(choices[4].value, "other", "other index #2");
   assert.equal(choices[5].value, "none", "none index #2");
 
-  settings.specialChoicesOrder.noneItem = [-3, 3];
+  settings.specialChoicesOrder.noneItem = [-5, 5];
   question.showNoneItem = false;
   question.showNoneItem = true;
   choices = question.visibleChoices;
@@ -1456,7 +1596,7 @@ QUnit.test("SelectBase visibleChoices for selectAll, none and showOtherItem", fu
 
   settings.specialChoicesOrder.selectAllItem = [-1];
   settings.specialChoicesOrder.noneItem = [1];
-  settings.specialChoicesOrder.otherItem = [2];
+  settings.specialChoicesOrder.otherItem = [4];
 });
 QUnit.test("Double noneItem and SelectAllItem", function (assert) {
   settings.specialChoicesOrder.noneItem = [-3, 3];
diff --git a/tests/question_matrixdynamictests.ts b/tests/question_matrixdynamictests.ts
index 9545c441fb..a35b43a952 100644
--- a/tests/question_matrixdynamictests.ts
+++ b/tests/question_matrixdynamictests.ts
@@ -4773,7 +4773,7 @@ QUnit.test("showInMultipleColumns property, and visibleIf in choices", function
             name: "col2",
             cellType: "checkbox",
             showInMultipleColumns: true,
-            hasNone: true,
+            showNoneItem: true,
             choices: [
               { value: "A", visibleIf: "{val1} = 1" },
               { value: "B", visibleIf: "{val1} = 2" },
diff --git a/tests/question_tagbox_tests.ts b/tests/question_tagbox_tests.ts
index 0d261ed4c0..41a2c6d95c 100644
--- a/tests/question_tagbox_tests.ts
+++ b/tests/question_tagbox_tests.ts
@@ -137,7 +137,7 @@ const jsonTagboxWithSelectAll = {
     type: "tagbox",
     name: "question1",
     hasOther: "true",
-    hasNone: "true",
+    showNoneItem: "true",
     hasSelectAll: "true",
     choices: [
       "item1",
diff --git a/tests/surveyquestiontests.ts b/tests/surveyquestiontests.ts
index d67646b966..82bc3baa11 100644
--- a/tests/surveyquestiontests.ts
+++ b/tests/surveyquestiontests.ts
@@ -1661,14 +1661,14 @@ QUnit.test("checkbox.renderedValue - storeOthersAsComment = false;", function (
   );
   assert.equal(question.comment, "X", "set comment");
 });
-QUnit.test("checkbox.renderedValue - hasNone = true, Bug #1609", function (
+QUnit.test("checkbox.renderedValue - showNoneItem = true, Bug #1609", function (
   assert
 ) {
   var survey = new SurveyModel();
   survey.addNewPage("page1");
   var question = new QuestionCheckboxModel("q");
   question.choices = ["A", "B", "C", "D"];
-  question.hasNone = true;
+  question.showNoneItem = true;
   survey.pages[0].addQuestion(question);
 
   question.value = ["A", "B"];
@@ -1686,14 +1686,14 @@ QUnit.test("checkbox.renderedValue - hasNone = true, Bug #1609", function (
   );
 });
 QUnit.test(
-  "checkbox.renderedValue - hasNone = true and survey.storeOthersAsComment = false, Bug #1609",
+  "checkbox.renderedValue - showNoneItem = true and survey.storeOthersAsComment = false, Bug #1609",
   function (assert) {
     var survey = new SurveyModel();
     survey.storeOthersAsComment = false;
     survey.addNewPage("page1");
     var question = new QuestionCheckboxModel("q");
     question.choices = ["A", "B", "C", "D"];
-    question.hasNone = true;
+    question.showNoneItem = true;
     survey.pages[0].addQuestion(question);
 
     question.value = ["A", "B"];
@@ -3020,13 +3020,13 @@ QUnit.test("space in others does not work correctly , bug #1214", function (
   );
 });
 
-QUnit.test("Checkbox hasNone", function (assert) {
+QUnit.test("Checkbox showNoneItem - modify value", function (assert) {
   var json = {
     elements: [
       {
         type: "checkbox",
         name: "q1",
-        hasNone: true,
+        showNoneItem: true,
         choices: [1, 2, 3, 4, 5],
       },
     ],
@@ -3034,22 +3034,58 @@ QUnit.test("Checkbox hasNone", function (assert) {
   var survey = new SurveyModel(json);
   var q = <QuestionCheckboxModel>survey.getQuestionByName("q1");
   assert.equal(q.visibleChoices.length, 6, "5 items + none");
-  q.hasNone = false;
+  q.showNoneItem = false;
   assert.equal(q.visibleChoices.length, 5, "none is removed");
-  q.hasNone = true;
+  q.showNoneItem = true;
   assert.equal(q.visibleChoices.length, 6, "none is added");
   q.value = [1, 2, "none"];
   assert.deepEqual(q.value, ["none"], "we keep only none");
   q.value = [1, "none"];
   assert.deepEqual(q.value, [1], "none should gone");
 });
-QUnit.test("Dropdown hasNone", function (assert) {
+QUnit.test("Checkbox showRefuseItem/showDontKnowItem - modify value", function (assert) {
+  var json = {
+    elements: [
+      {
+        type: "checkbox",
+        name: "q1",
+        showRefuseItem: true,
+        showDontKnowItem: true,
+        choices: [1, 2, 3, 4, 5],
+      },
+    ],
+  };
+  var survey = new SurveyModel(json);
+  var q = <QuestionCheckboxModel>survey.getQuestionByName("q1");
+  assert.equal(q.visibleChoices.length, 7, "7 items + refuse + don't know");
+
+  q.showRefuseItem = false;
+  assert.equal(q.visibleChoices.length, 6, "refuse is removed");
+  q.showRefuseItem = true;
+  assert.equal(q.visibleChoices.length, 7, "refuse is added");
+
+  q.showDontKnowItem = false;
+  assert.equal(q.visibleChoices.length, 6, "don't know is removed");
+  q.showDontKnowItem = true;
+  assert.equal(q.visibleChoices.length, 7, "don't know is added");
+
+  q.value = [1, 2, "refused"];
+  assert.deepEqual(q.value, ["refused"], "we keep refuse only");
+  q.value = [1, "refused"];
+  assert.deepEqual(q.value, [1], "refuse should gone");
+
+  q.value = [1, 2, "dontknow"];
+  assert.deepEqual(q.value, ["dontknow"], "we keep dontknow only");
+  q.value = [1, "dontknow"];
+  assert.deepEqual(q.value, [1], "dontknow should gone");
+});
+QUnit.test("Dropdown showNoneItem", function (assert) {
   var json = {
     elements: [
       {
         type: "dropdown",
         name: "q1",
-        hasNone: true,
+        showNoneItem: true,
         choices: [1, 2, 3, 4, 5],
       },
     ],
@@ -3057,9 +3093,9 @@ QUnit.test("Dropdown hasNone", function (assert) {
   var survey = new SurveyModel(json);
   var q = <QuestionDropdownModel>survey.getQuestionByName("q1");
   assert.equal(q.visibleChoices.length, 6, "5 items + none");
-  q.hasNone = false;
+  q.showNoneItem = false;
   assert.equal(q.visibleChoices.length, 5, "none is removed");
-  q.hasNone = true;
+  q.showNoneItem = true;
   assert.equal(q.visibleChoices.length, 6, "none is added");
 });
 
@@ -3207,7 +3243,7 @@ QUnit.test("Test property hideIfChoicesEmpty", function (assert) {
   assert.equal(question.isVisible, false, "Choices are empty");
   question.hasOther = true;
   question.hasSelectAll = true;
-  question.hasNone = true;
+  question.showNoneItem = true;
   assert.equal(question.isVisible, false, "Still choices are empty");
   question.choices = [1, 2, 3];
   assert.equal(question.isVisible, true, "Choices are not empty");
@@ -4578,7 +4614,7 @@ QUnit.test("Checkbox question getItemClass() + survey.onUpdateChoiceItemCss", fu
         name: "q1",
         storeOthersAsComment: false,
         hasSelectAll: true,
-        hasNone: true,
+        showNoneItem: true,
         choices: [1, 2],
       },
     ],
@@ -5295,7 +5331,7 @@ QUnit.test("Checkbox: Carry Forward and hasOther", function(assert) {
   assert.equal(q2.visibleChoices[2].text, "someText", "other text");
 });
 QUnit.test(
-  "choicesFromQuestion hasSelectAll, hasNone, hasOther properties, Bug#",
+  "choicesFromQuestion hasSelectAll, showNoneItem, hasOther properties, Bug#",
   function (assert) {
     var survey = new SurveyModel({
       elements: [
@@ -5304,7 +5340,7 @@ QUnit.test(
           name: "q1",
           choices: [1, 2, 3],
           hasSelectAll: true,
-          hasNone: true,
+          showNoneItem: true,
           hasOther: true,
         },
         {
@@ -5312,7 +5348,7 @@ QUnit.test(
           name: "q2",
           choicesFromQuestion: "q1",
           hasSelectAll: true,
-          hasNone: true,
+          showNoneItem: true,
           hasOther: true,
         },
       ],
@@ -5607,7 +5643,7 @@ QUnit.test(
       false,
       "none not in list"
     );
-    q1.hasNone = true;
+    q1.showNoneItem = true;
     assert.equal(q1.isItemInList(q1.visibleChoices[4]), true, "none in list");
 
     assert.equal(q1.visibleChoices[5].value, "other", "index=5, other");
@@ -5679,7 +5715,7 @@ QUnit.test(
       "Do not show SelectAll+None+hasOther+new: 2"
     );
     q1.hasSelectAll = true;
-    q1.hasNone = true;
+    q1.showNoneItem = true;
     q1.hasOther = true;
     assert.equal(
       q1.visibleChoices.length,
@@ -5728,7 +5764,7 @@ QUnit.test("Creator V2: do not add choices from carry-forward in design mode", f
   settings.supportCreatorV2 = false;
 });
 QUnit.test(
-  "Creator V2: Hide selectAll, hasNone and hasOther if this properties are invisible",
+  "Creator V2: Hide selectAll, showNoneItem and hasOther if this properties are invisible",
   function (assert) {
     var json = {
       elements: [
@@ -5741,7 +5777,7 @@ QUnit.test(
     };
     settings.supportCreatorV2 = true;
     Serializer.findProperty("selectbase", "hasOther").visible = false;
-    Serializer.findProperty("selectbase", "hasNone").visible = false;
+    Serializer.findProperty("selectbase", "showNoneItem").visible = false;
     Serializer.findProperty("checkbox", "hasSelectAll").visible = false;
     var survey = new SurveyModel();
     survey.setDesignMode(true);
@@ -5753,7 +5789,7 @@ QUnit.test(
       "Hide SelectAll+None+hasOther and show only new: 3+4 - 3"
     );
     Serializer.findProperty("selectbase", "hasOther").visible = true;
-    Serializer.findProperty("selectbase", "hasNone").visible = true;
+    Serializer.findProperty("selectbase", "showNoneItem").visible = true;
     Serializer.findProperty("checkbox", "hasSelectAll").visible = true;
     settings.supportCreatorV2 = false;
   }