A Natural History of Rape: Biological Bases of Sexual Coercion

Can we get rid of rape? If not, how can we reduce it? Biologist Thornhill (University of New Mexico) and anthropologist Palmer (University of Colorado) contend in this already highly controversial book that prevailing explanations of why men rape and how we can prevent them rely on wrong, dangerous and outmoded dogma. The right explanations for rape, they contend, as for all other human behavior, rely on Darwinian models of natural selection. Rapists want sex, they say. Rape, or the drive to rape, is an adaptation: some of our ancestors increased their reproductive success by mating with unwilling partners, and the brain-wiring that led them to do so got passed on to their male descendants. Women, meanwhile, have evolved adaptations against rape, and against getting pregnant if they are raped. What we call rape happens in most if not all cultures; nonhuman primates rape, too. Among the policy consequences if Thornhill and Palmer are to be believed: teenage boys should be educated to acknowledge and control their lust, and young women should show less skin and be chaperoned more. Using surveys of rapists and victims, and analogies from the animal kingdom, the authors make provocative claims about specific motives for rape, specific reactions to it and ways to test their hypotheses. One study suggests that young women become more risk-averse ""in the follicular (fertile) phase of their menstrual cycles""--unless they are taking birth-control pills, in which case menstrual phase and risk-aversion won't correlate. This suggests a real anti-rape adaptation. But Thornhill also claims his own research has shown that rape victims of reproductive age (12-45) feel worse afterward than older and younger victims. One wonders how he measured young girls' or older women's pain. (Apr.)