According Melinda Gates the wife of the (white, male) Microsoft pioneerBill Gates—only women and minorities can give us innovation. [Why Melinda Gates Has Been Funding Female VCs Through Her Secretive Investment Firm, by Polina Marinova, May 30, 2018.]Perhaps Mrs Gates should talk to the psychologists who actually research these things. Because their finding is that... Read More

In my last column, I reviewed the findings of Butovskaya et al. (2015) on testosterone and polygyny in two East African peoples: - Testosterone levels were higher in the polygynous Datoga than in the monogamous Hadza. This difference is innate. - Datoga men were more aggressive than Hadza men on all measures used (physical aggression,... Read More

Humans differ in paternal investment—the degree to which fathers help mothers care for their offspring. They differ in this way between individuals, between populations, and between stages of cultural evolution. During the earliest stage, when all humans were hunter-gatherers, men invested more in their offspring with increasing distance from the equator. Longer, colder winters made... Read More

Are men and women more alike in some populations than in others? It's possible. First, boys and girls differentiate from each other to varying degrees during adolescence, and this process of sexual differentiation is genetically influenced. There are even conditions, like Swyer syndrome, where an individual is chromosomally male (46, XY) and yet develops externally... Read More