When the group answered the survey questions while well-rested, both the men and the women rated men's interest in sex as considerably lower than women's. But after a night of sleep deprivation, the men in the group rated women's interest--that is, women as an entire gender--as considerably higher. In fact, it was about the same as their rating for men's interest. The women, meanwhile, didn't change their answers, even after losing the night's sleep. The bad night's sleep also didn't have any effect on how either gender judged interest in commitment.