3
I'll just adress some stuff I know and ignore the rest.
>girls do better than boys in school.
True, but misleading. It's due to women reaching puberty and developing sooner than boys. Basically the differences even out by the age of around 18-20 years old.
>No relation between brain size and intelligence
Likely this is very wrong. Some relation between the two factors certainly exist, but this is indeed controversial because of "muh racism"
https://neuroscience.stanford.edu/ne...ke-you-smarter
>Men are more likely to have cognitive impairment:
100% true. Men tend to not cluster around the average IQ, whilst women do. This means that more men have sub-70 IQ, as well as more men having an IQ above 160 compared to women. Chess is a game that requires a very high IQ and men excel at that game far more than women, it's not even close.
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