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Three Laws of Behavior Genetics and What They Mean

Turkheimer, Eric·2000·Current Directions in Psychological Science

Abstract

Behavior genetics has demonstrated that genetic variance is an important component of variation for all behavioral outcomes, but variation among families is not. These results have led some critics of behavior genetics to conclude that heritability is so ubiquitous as to have few consequences for scientific understanding of development, while some behavior genetic partisans have concluded that family environment is not an important cause of developmental outcomes. Both views are incorrect. Genotype is in fact a more systematic source of variability than environment, but for reasons that are methodological rather than substantive. Development is fundamentally nonlinear, interactive, and difficult to control experimentally. Twin studies offer a useful methodological shortcut, but do not show that genes are more fundamental than environments.

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Research works printed but not linked: 15

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Metadata

Authors
Turkheimer, E.
Venue
Current Directions in Psychological Science
Published
2000-10
Volume
9
Issue
5
Pages
160-164
ISSN
  • 0963-7214
  • 1467-8721
Cited by
699
References
2
Language
en

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CoChat. (2026). Citation check: Three Laws of Behavior Genetics and What They Mean. https://app.cochat.ai/papers/10.1111/1467-8721.00084
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Turkheimer, E. (2000). Three Laws of Behavior Genetics and What They Mean. Current Directions in Psychological Science. https://doi.org/10.1111/1467-8721.00084