In the past twenty years, scholarship on human sexuality has been undergoing a radical transformation, but only in some disciplines. Psychology seems not to have noticed that new theories have been proposed that are "potentially explosive in their implications for our future understanding and behavior in regard to sex" (Vicunus, 1982, p. 137). Yet there is an urgent need for new ideas and research in the psychology of sexuality. As feminist anthropologist Gayle Rubin (1984) put it,