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[–]jacques1102[S] 3 insightful - 1 fun3 insightful - 0 fun4 insightful - 1 fun -  (1 child)

In which case wouldn't that mean that the brains were more masculine or feminine depending on what it produces?Neither which would prove a male or female brain since we know of tomboys and feminine guys existing.

[–]Alienhunter糞大名 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

People's natural hormonal levels can vary. That might effect brain chemistry. Beyond that I can't say. I'm very skeptical of any claims towards "sexed brains".

I first heard the concept several decades ago, not from trans activists, but by christian fundamentalist dominionists as a biological explanation for strict gender rolls.

It's possible there's some overarching statistical prevalence of certain differences along sex lines across the entire population. But it's not logical to assume that someone whose brain chemistry is deviant from the statistical majority is somehow the opposite sex. Sex is defined by reproductive capability and the only thing that matters is what gametes are produced. (Or would be produced in cases of infertility).