Pew Research compares forced-choice versus check-all response options.

This is for my psychometric instructors. (Glorious, beloved) Pew Research Center compared participant behavior when they have to answer the same question in either a) forced-choice or b) check-all format. Here are the links to the short report and to the long report.


What did they find? Response options matter, such that more participants agreed with statements when they were in the forced-choice format. See below:



So, this is interesting for an RM class. I also like that the short report explained the two different kinds of question responses.

The article also explores a variety of reasons for these findings, as well as other biases that participants exhibit when responding to questionnaires:


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