Genetic and Environmental Contributions to General Cognitive Ability Through the First 16 Years of Life

Overview

Journal Dev Psychol

Publisher American Psychological Association

Specialties Pediatrics
Psychology

Date 2004 Sep 10

PMID 15355167

Citations 35

Authors

Stephen A Petrill

Paul A Lipton

John K Hewitt

Robert Plomin

Stacey S Cherny

Robin Corley

John C DeFries

Affiliations

Soon will be listed here.

Abstract

The genetic and environmental contributions to the development of general cognitive ability throughout the first 16 years of life were examined using sibling data from the Colorado Adoption Project. Correlations were analyzed along with structural equation models to characterize the genetic and environmental influences on longitudinal stability and instability. Intraclass correlations reflected both considerable genetic influence at each age and modest shared environmental influence within and across ages. Modeling results suggested that genetic factors mediated phenotypic stability throughout this entire period, whereas most age-to-age instability appeared to be due to nonshared environmental influences.

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