Cordelia Fine is a psychologist and philosopher of science whose work brilliantly demolishes myths about the "nature" of differences between men and women. Prof. Fine has written three books, A Mind of Its Own: How Your Brain Distorts and Deceives, Delusions of Gender: The Real Science Behind Sex Differences, and Testosterone Rex: Unmaking the Myths of Our Gendered Minds.

Today she joins for a conversation about various popular myths about how men and women are "wired" and why a lot of supposedly sound science on sex differences is, in fact, untrustworthy or downright wrong. Prof. Fine shows how these kinds of claims about the biological roots of social gender differences have a long, long history, and they're not any more sound now than they were in the 1900s when suffrage was being opposed on the grounds that women were biologically incapable of voting intelligently. We discuss the contemporary claims of people like Jordan Peterson and the Google memo guy about the supposed scientific foundations of various kinds of gender inequalities.

“As the number of studies reporting sex differences in the brain pile up, the argument that sexual selection has created two kinds of human brain—male and female—seems to get stronger and stronger. Could John Gray have been right after all when he claimed that men are from Mars and women are from Venus? Some scientists have argued that although average differences in the way males and females think, feel, and act may, on a trait-by-trait basis, be relatively modest, the accumulated effect is profound. 'Psychologically, men and women are almost a different species,' was the conclusion of one Manchester Business School academic...If the sexes are essentially different, then equality of opportunity will never lead to equality of outcome. We’re told that 'if the various workplace and non-workplace gaps could be distilled down to a single word, that word would not be ‘discrimination’ but "testosterone"'; that evolved sex differences in risk preferences are 'one of the pre-eminent causes of gender difference in the labor market'; and that rather than worrying about the segregated pink and blue aisles of the toy store we should respect the 'basic and profound differences' in the kinds of toys boys and girls like to play with, and just 'let boys be boys, let girls be girls.' This is Testosterone Rex: that familiar, plausible, pervasive, and powerful story of sex and society. Weaving together interlinked claims about evolution, brains, hormones, and behavior, it offers a neat and compelling account of our societies’ persistent and seemingly intractable sex inequalities. Testosterone Rex can appear undefeatable. Whenever we discuss the worthy topic of sex inequalities and what to do about them, it is the giant elephant testicles in the room. What about our evolved differences, the dissimilarities between the male brain and the female brain? What about all that male testosterone? But dig a little deeper and you will find that rejecting the Testosterone Rex view doesn’t require denial of evolution, difference, or biology. Indeed, taking them into account is the basis of the rejection...Testosterone Rex gets it wrong, wrong, and wrong again. Contemporary scientific understanding of the dynamics of sexual selection, of sex effects on brain and behavior, of testosterone-behavior relations, and of the connection between our evolutionary past and our possible futures, all undermine the Testosterone Rex view.” — Cordelia Fine, Testosterone Rex: Myths of Sex, Science, and Society