Gender equity can cause sex differences to grow bigger
- Written by Rob Brooks, Scientia Professor of Evolutionary Ecology; Director, Evolution & Ecology Research Centre, UNSW Australia

How do sex differences arise? Few questions animate as much disagreement and contention, in everyday society and in academic study. For as long as the question has been asked, the answers have fallen between two extremes: sex differences arise innately, or they come from social experience.
That same polarity defines much of the study of human...