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David Laibson

By this expert

The Fourth Law of Behavior Genetics

Paper Conference paper | By Christopher Chabris, James J. Lee, David Cesarini, Daniel Benjamin, and David Laibson | Apr 2015

Behavior genetics is the study of the relationship between genetic variation and psychological traits. Turkheimer (2000) proposed “Three Laws of Behavior Genetics” based on empirical regularities observed in studies of twins and other kinships. On the basis of molecular studies that have measured DNA variation directly, we propose a Fourth Law of Behavior Genetics: “A typical human behavioral trait is associated with very many genetic variants, each of which accounts for a very small percentage of the behavioral variability.”