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Natural History of Ashkenazi Intelligence Gregory Cochran ...

Natural History of Ashkenazi Intelligence Gregory Cochran , Jason Hardy, Henry Harpending Department of Anthropology University of Utah Salt Lake City UT 84112 USA. Running head: Ashkenazi Intelligence Keywords: Intelligence , Ashkenazi Mutations, Evolution This paper elaborates the hypothesis that the unique demography and sociology of Ashkenazim in medieval Europe selected for Intelligence . Ashkenazi literacy, economic specialization, and closure to inward gene flow led to a social environment in which there was high fitness payoff to Intelligence , specifically verbal and mathematical Intelligence but not spatial ability. As with any regime of strong directional selection on a quantitative trait, genetic variants that were otherwise fitness reducing rose in frequency.

demographic information it will be difficult to evaluate this hypothesis. We proceed by summarizing IQ psychometrics and IQ as a quantitative genetic trait. We then describe relevant aspects of Ashkenazi social and demographic history with a focus on the centuries between 800 and 1600AD, after which we think many of the unique

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