A Billion Years of Sex Differences

A Billion Years of Sex Differences, Volume 1, is a comprehensive exploration of human sexuality and psychology. Author Steve Stewart-Williams utilizes evolutionary psychology to examine the origins and impact of sex differences in modern life. The text analyzes a wide range of topics, including dating, parenting, workplace gender gaps, and mental health, while drawing on a century of scientific research.

This psychology title challenges common misconceptions by explaining how evolution shapes behavior beyond simple socialization. Stewart-Williams argues for a balanced perspective that recognizes biological differences without supporting bias or systemic barriers. By blending evolutionary psychology with contemporary social analysis, the book provides an updated account of how humans differ and how these traits influence the politics of equality.