Inclusion of a "no response" or "don't know" response option may:
A) threaten the generalizability of results
B) reduce refusal or drop-out rates
C) help respondents interpret the other response options
D) complicate interpretation of the results
E) none of the above

Question

Quizplus · Accepted Answer

Including a "no response" or "don't know" option can reduce refusal or drop-out rates by allowing respondents who are unsure to still participate. However, it can also complicate interpretation of the results as it introduces ambiguity about the respondents' true opinions or knowledge.

Inclusion of a "No Response" or "Don't Know" Response Option