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Article

Shared-environmental contributions to high cognitive ability.

Behavior genetics - 1 Jul 2009

Kirkpatrick Robert M, McGue Matt, Iacono William G

Abstract excerpt

Using a combined sample of adolescent twins, biological siblings, and adoptive siblings, we estimated and compared the differential shared-environmentality for high cognitive ability and the shared-environmental variance for the full range of ability during adolescence. Estimates obtained via multiple methods were in the neighborhood of 0.20, and suggest a modest effect of the shared environment on both high and...

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Identifiers

PMID: 19377874
DOI: 10.1007/s10519-009-9265-0
PMCID: PMC2751599

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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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