““When the subjects arrived at the psychology lab, they were sent into individual dressing rooms with full-length mirrors. Half of the dressing rooms contained bathing suits (one-piece for the women, trunks for the men) and half contained sweaters, all of which were available in a wide range of sizes. Once the subjects put on the assigned clothing, they were told to hang out in the dressing room for fifteen minutes before they filled out a questionnaire about whether or not they would want to purchase the item. While they waited, they were asked, in order to help the researchers use the time efficiently, to complete a math test “for an experimenter in the Department of Education.” As you’ve already guessed, the psychologists weren’t helping their colleagues in the Department of Education. They were measuring whether taking a math test while wearing a bathing suit would affect the women’s scores.””