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Article

The developmental etiology of high IQ.

Behavior genetics - 1 Jul 2009

Brant Angela M, Haberstick Brett C, Corley Robin P, Wadsworth Sally J, DeFries John C, Hewitt John K

Abstract excerpt

The genetic and environmental trends in IQ development were assessed in 483 same-sex twin pairs in the Colorado longitudinal twin study using maximum-likelihood model-fitting analysis. The twins were assessed periodically from ages 1 to 16. Results show a decreasing influence of shared environment and an increasing influence of heritability across development, with large and increasing age to age stability of...

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Identifiers

PMID: 19377873
DOI: 10.1007/s10519-009-9268-x
PMCID: PMC3086674

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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