NATURAL HISTORY OF ASHKENAZI INTELLIGENCE

@article{Cochran2005NATURALHO,
  title={NATURAL HISTORY OF ASHKENAZI INTELLIGENCE},
  author={Gregory M. Cochran and Jason Hardy and Henry C. Harpending},
  journal={Journal of Biosocial Science},
  year={2005},
  volume={38},
  pages={659 - 693}
}
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… 
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