Evolutionary perspectives on human sex differences and their discontents

Evolutionary explanations of human behavior have produced many new insights, but also much resistance. This essay examines 2 books on sex differences written with very different approaches. Rosemary Hopcroft'sEvolution and Genderargues that men and women can be both equal and different and that average biological differences between the sexes, which are often small, do not threaten the ideal of political equality. In Hopcroft's view, understanding these differences with the help of evolutionary theory is aconditionfor the realization of equality, not an obstacle. Saini'sInferiordepicts an opposition between an ‘old science’, portraying sex differences as immense, and a ‘new science’, with most sex differences being so small that they cannot possibly account for social trends. WhileEvolution and Gendergives a concise and representative view of current evolutionary research on sex differences,Inferiorclaims that obsessions pervade entire research areas.Evolution and Genderhas a careful tone, whileInferioroften emphasizes the allegedly ‘controversial’ nature of studies. The essay ends with reflections on how to best communicate the results of evolutionary psychology to the public.