Genetic and environmental transactions underlying educational attainment

Wendy Johnson, Ian J. Deary, William G Iacono

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

This report used a population-representative longitudinal twin study with two birth cohorts to explore the association between intelligence and education by understanding how genetic and environmental influences on intelligence moderate genetic and environmental influences on school grades and educational attainment. Nonshared environmental influences on grades were strong when IQ was low, but decreased across the range of IQ. Shared environmental influences common to age 24 educational attainment and age 17 IQ were strong when IQ was low, but genetic influences common to IQ and education were strong when IQ was high. These results suggest that the causal mechanisms linking educational variables with intelligence differ for people with different levels of intelligence.

Original languageEnglish (US)
Pages (from-to)466-478
Number of pages13
JournalIntelligence
Volume37
Issue number5
DOIs
StatePublished - Sep 1 2009

Keywords

  • Educational attainment
  • Gene-environment correlation and interaction
  • Genetic and environmental influences
  • Grade point average
  • IQ

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