The connectome is important. There are blood flow differences, electrical signalling differences and these are now proof of pathway differences. Literally, observable (spatial) differences in the neural network.
Sex differences are of high scientific and societal interest because of their prominence in behavior of humans and nonhuman species. [DS: worth reminding] This work is highly significant because it studies a very large population of 949 youths (8–22 y, 428 males and 521 females) using the diffusion-based structural connectome of the brain, identifying novel sex differences. The results establish that male brains are optimized for intrahemispheric and female brains for interhemispheric communication. The developmental trajectories of males and females separate at a young age, demonstrating wide differences during adolescence and adulthood. The observations suggest that male brains are structured to facilitate connectivity between perception and coordinated action, whereas female brains are designed to facilitate communication between analytical and intuitive processing modes.
This supports the ideas of the masculine and feminine brains as separate evolved developments a la Baron-Cohen. I doubt the people selling “we’re the same” would like these results, and it explains why they haven’t got better publicity because Narrative sells.
Biological proof of gender (psyche) differences too (the “gender binary” is based in biology!). And since the connectome informs function and behaviour, gender roles too!
Want to see the best proof in this study?