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Originally Posted by highthief
If you buy into Ashnekazi intelligence being genetically based, you really only have to go back a few centuries to discover the purported roots of their intelligence (confined to certain areas, permitted to work in very specific industries, and enjoying prolific numbers of offspring if successful in those industries).
In relatively small populations in relatively small areas (such as the Jews in question), you only need a few generations to begin to see such affects on a population as a whole.
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Differences in Ashnekazi Jews and other groups in intelligence (as measured by the WAIS or some other standard IQ measure) could have a heritable component entirely independent of the adaptationist explanation you suggest above. It could just be a founder effect/genetic drift.