now the first hour (of the interview) was all pre-intercourse information and then he would ask you if you ever had intercourse. if your answer was yes you stayed another hour. boys on campus figured out girls who stayed two hours had had intercourse and so they would sit out there. if you came out after an hour they were not interested in you. if you came out after two hours they made a pass at you.
excerpt from american experience's documentary on sex researcher, alfred kinsey. here, alice ginott cohn talks about her memory of being interviewed by kinsey.