Previous research demonstrated that respondents are more likely to endorse the idea that something should “not be allowed” (or “not be forbidden”) than to endorse the idea that it should be “forbidden” (or “allowed”), even though these expressions seem logically equivalent. The hypothesis is advanced that this asymmetry is due to the response behavior of indifferent respondents who neither endorse that something should be forbidden nor that it should be allowed, resulting in higher endorsements of the negative form of both question wordings. Data consistent with that explanation are presented and the cognitive mechanism underlying the response behavior of indifferents is discussed.