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It makes no sense to posit that IQ differences between population have a different cause than IQ differences between individuals. Adoption raises the IQ by at m
by wolfgangK 5y ago
It makes no sense to posit that IQ differences between population have a different cause than IQ differences between individuals. Adoption raises the IQ by at most 5 points ! What environmental difference could have a much more dramatic effect than that (between population IQ difference are up to 15 pts) ?