Do you predict, then, that if you put a person in a group where every other person disapproves more of attempts to dodge the question than to provide either answer, and makes this known, then they will never refuse to answer the question on its own terms?

I predict this will have a large effect on the number who refuse to answer the question, increasing with the closeness of the peer group and the level of disapproval. Enough to flip 75% nonresponse to 25% nonresponse or something like that.