The Wilson Effect: The Increase in Heritability of IQ With Age

@article{Bouchard2013TheWE,
  title={The Wilson Effect: The Increase in Heritability of IQ With Age},
  author={Thomas J. Jr. Bouchard},
  journal={Twin Research and Human Genetics},
  year={2013},
  volume={16},
  pages={923 - 930}
}
  • T. Bouchard
  • Published 2013
  • Medicine, Psychology
  • Twin Research and Human Genetics
Ronald Wilson presented the first clear and compelling evidence that the heritability of IQ increases with age. We propose to call the phenomenon ‘The Wilson Effect’ and we document the effect diagrammatically with key twin and adoption studies, including twins reared apart, that have been carried out at various ages and in a large number of different settings. The results show that the heritability of IQ reaches an asymptote at about 0.80 at 18–20 years of age and continuing at that level well… Expand
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