Many aren't aware of the smaller SD (~13; quite similar to that of e.g. Finns and NE Asians) of Blacks, compared to that of whites (15). One very interesting fact: black females have higher avg IQ than black males; this in unlike in any other major population group.
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Shorter version - the ornamental sex of a race is going to have the lower IQ because there's weaker relative selective pressure for intelligence.
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