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polymathwannabe comments on Stupid Questions, 2nd half of December - Less Wrong Discussion
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This does not addresses my question. The implication is "... shouldn't it follow that different races could have different brains—such that these differences are generalizable according to race?"
I think this implication was obvious. For example, if someone were to ask "Do different races typically have different skin colors?" I don't think you would answer "Different people of the same race have different skin colors. No two skin colors are exactly the same. You have to make statements that are less vague."
Edit: If, in fact, that is the way you would answer, then I'm mistaken, but I don't think that's necessary.
Judging only by skin color, most Korean hands would be indistinguishable from most Caucasian hands, and most Arabic hands would be indistinguishable from most Latino hands.
Likewise, judging only by brain function, no EEG-visible or MRI-visible differences appear between ethnic groups.
Brain volume is often calculated from MRIs, and varies between racial groups. (MRIs also give you brain volume of different regions of the brain, which also vary between racial groups.)
If you have any good (academic for preference) sources for the latter statement, I'd love to see them, mainly to add to my 'Collection of X-refuting hyperlinks' I have easily accessible when browsing the Internet At Large.