So it IS a good measure of where things are, it is just significantly affected by environment in ways that were not well understood. The alleged bias to white Westerners is not bias then but a function of the health and wealth of the average white Westerner. I would be very interested in seeing some transparent IQ tests of the American population by decade since 1960, because we should see a degradation of IQ in the US given the degradation of health and wealth of the average American during that time frame.

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