Abstract

BackgroundThe evolution of the female orgasm in humans and its role in romantic relationships is poorly understood. Whereas the male orgasm is inherently linked to reproduction, the female orgasm is not linked to obvious reproductive or survival benefits. It also occurs less consistently during penetrative sex than does the male orgasm. Mate-choice hypotheses posit that the wide variation in female orgasm frequency reflects a discriminatory mechanism designed to select high-quality mates.ObjectiveWe aimed to determine whether women report that their orgasm frequency varies between partners, whether this variation reflects mates' personal characteristics, and whether this variation reflects own and partner sexual behaviour during intercourse.DesignWe collected survey data from 103 women who rated the extent to which their orgasm frequency varied between partners, the characteristics of previous sexual partners who induced high-orgasm frequency and those who induced low-orgasm frequency,...