RSSThanks, I’ll read the comments when I get a chance, it’s always a sign of high-quality visitors to a particular website when the comments section is nearly as informative and stimulating as the original article.
If the African environment’s effects on the native populations’ IQ, compared to a US environment, is a depression of, say, about 10 points, that would straighten out the IQ/Euro DNA ratio, about a 5 point increase for every 25% addition.
It speaks to a much deeper difference than mere IQ between the nature of the European and the African that the latter maintains, only with much help from the former, a society that results in such a depression.
Is there a reason to believe the relationship between white/black DNA % and IQ is a direct linear one? I am not overly familiar with the field but it seems to me at least possible and actually likely that there is some sort of non-linear relationship. For example, if Bantu Africans have an average IQ of 70 and White Americans an average of 100, one would expect 50/50 mulattoes’ average IQ to be right in the middle at 85, rather than the 80/20 American Blacks’ being 85.