The Heritability of General Cognitive Ability: A Within-Family Adoption Design

Autor/inn/en	Petrill, Stephen A.; Deater-Deckard, Kirby
Titel	The Heritability of General Cognitive Ability: A Within-Family Adoption Design
Quelle	In: Intelligence, 32 (2004) 4, S.403-409 (7 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0160-2896
DOI	10.1016/j.intell.2004.05.001
Schlagwörter	Cognitive Ability; Family (Sociological Unit); Heredity; Environmental Influences; Adoption; Children; Mothers + Suchen Sie Ihr Suchwort? Denkfähigkeit; Familie; Erblichkeit; Environmental influence; Umwelteinfluss; Child; Kind; Kinder; Mother; Mutter
Abstract	The current study employed a within-family adoption design to examine the genetic and environmental influences on general cognitive ability. A sample of 51 families with biological (mean age = 9.83 years, S.D. = 2.81) and adoptive children (mean age = 6.86, S.D. = 1.92) was selected from the larger "Northeast-Northwest Collaborative Adoption Projects" [Deater-Deckard, K., Petrill, S.A., & Wilkerson, B. (2003). "The Northeast-Northwest Collaborative Adoption Project: Identifying family environmental influences on cognitive and social development" (pp. 157-178). In K. Deater-Deckard & S. A. Petrill (Eds.). "Gene-environment processes in social behaviors and relationships." New York: Haworth Press]. Parents and children were assessed using a shortform of the "Stanford-Binet Intelligence Scale" [Thorndike, R.L., Hagen, E.P., & Sattler, J.M. (1986). "Guide for administering and scoring the fourth edition: Stanford-Binet Intelligence Scale." Chicago, IL; Riverside]. Mothers were significantly correlated with their biological children (r = 0.23) but not their adoptive children (r = -0.03). These results suggest that genetic and nonshared environmental influences are significant, whereas shared environmental influences are nonsignificant. However, adoptive children's cognitive skills were predicted by age of placement and number of years in the home, suggesting that other nongenetic factors not related to maternal cognitive ability may be operating. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10