IQ differences by race in the US.
(twitter.com)
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The asian parenting style REALLY helps early IQ development in their kids compared to the not as involved method a lot of western parent have.
But damn that difference between American blacks and any other black people on earth. Really showing where the root of the problem is and it isn't skin colour..
Adult IQ is extremely heritable (most of the variance in adult IQ is caused by genetics). Parenting style is basically meaningless for IQ unless you are beating your children or your home is illiterate. Blacks in the U.S. have precisely the IQ you would predict based on their mix of white and african genes (african IQ is lower than american black IQ, the '57' black africans in this chart is skewed because african immigrants to the U.S. are more likely to have higher IQ, look up Richard Lynn).
I'm not sure White admixture predicts anything. At least not for Hispanic groups.
White Mexican, White Cuban, White Pto Rican all score lower than Central & South American, who tend to have lower white admixture and higher Native and African admixtures.
This chart is not very useful, because there exist differing selection biases in who makes it to America from different places.
This is more useful: https://twitter.com/Steve_Sailer/status/1169741018796675074?lang=en