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Titolo:
Genetic factor analyses of specific cognitive abilities in 5-year-old Dutch children
Autore:
Rietveld, MJH; van Baal, GCM; Dolan, CV; Boomsma, DI;
Indirizzi:
Free Univ Amsterdam, Dept Biol Psychol, NL-1081 HV Amsterdam, Netherlands Free Univ Amsterdam Amsterdam Netherlands NL-1081 HV terdam, Netherlands Univ Amsterdam, Dept Psychol, Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands pt Psychol, Amsterdam, Netherlands
Titolo Testata:
BEHAVIOR GENETICS
fascicolo: 1, volume: 30, anno: 2000,
pagine: 29 - 40
SICI:
0001-8244(200001)30:1<29:GFAOSC>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENVIRONMENTAL-INFLUENCES; GENERAL INTELLIGENCE; TWINS; PROJECT; SCALE; LIFE;
Keywords:
specific cognitive abilities; factor models; heritability; children;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Rietveld, MJH Free Univ Amsterdam, Dept Biol Psychol, Boelelaan 1111, NL-1081 HV Amsterdam, Netherlands Free Univ Amsterdam Boelelaan 1111 AmsterdamNetherlands NL-1081 HV
Citazione:
M.J.H. Rietveld et al., "Genetic factor analyses of specific cognitive abilities in 5-year-old Dutch children", BEHAV GENET, 30(1), 2000, pp. 29-40

Abstract

The genetic and environmental factor structures of intellectual abilities in 5-year-old Dutch twins were examined. Six subtests of the RAKIT, a Dutchintelligence test, were administered to 209 twin pairs. The subtests were categorized as either verbal or nonverbal. The genetic covariance structuredisplayed a two-common factor structure including specific factors to account for subtest residual variance. The correlation between the genetic Verbal and genetic Nonverbal factors did not differ significantly from zero. The shared environmental influence displayed a single-common factor structure. Unique environmental influences did not contribute to the covariance between subtests and were specific in origin. Estimates of heritability of the subtests ranged from 15% to 56%. Shared environmental influences were significantly present, but were modest in magnitude. The phenotypic data was best described by an oblique two-factor model. This model was not mirrored in the factor structures found for either the genetic or environmental covariances.

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Documento generato il 20/01/20 alle ore 22:09:41