Differential Heritability Across Levels of Cognitive Ability

Behav Genet. 1992 Mar;22(2):153-62. doi: 10.1007/BF01066994.


Differences in heritability and shared environmentality across levels of cognitive ability were assessed in a sample of 264 twin pairs tested at 1 year of age and in subsets tested at 2 and 3 years. Using an extension of the DF multiple regression methodology for analyzing twin data, no evidence was found for a linear or quadratic effect of level of cognitive ability on estimates of heritability or shared environmentality.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Aptitude*
  • Child, Preschool
  • Female
  • Humans
  • Infant
  • Intelligence / genetics*
  • Male
  • Models, Genetic
  • Social Environment
  • Twins, Dizygotic / genetics*
  • Twins, Dizygotic / psychology
  • Twins, Monozygotic / genetics*
  • Twins, Monozygotic / psychology