Why do most people never have sex with close relatives? And why do they disapprove of other people doing so? Incest Avoidance and Incest Taboos investigates our human inclination to avoid incest and the powerful taboo against incest found in all societies. Both subjects stir strong feelings and vigorous arguments within and beyond academic circles. With great clarity, Wolf lays out the modern assumptions about both, concluding that all previous approaches lack precision and balance on insecure evidence. Researchers he calls -constitutionalists- explain human incest avoidance by...