caa a22 4500 475799453 CHVBK 20180406123733.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1023/A:1002034509854 doi (NATIONALLICENCE)springer-10.1023/A:1002034509854 Genetic Factor Analyses of Specific Cognitive Abilities in 5-Year-Old Dutch Children [Elektronische Daten] [M. Rietveld, G. van Baal, C. Dolan, D. Boomsma] The genetic and environmental factor structures of intellectual abilities in 5-year-old Dutch twins were examined. Six subtests of the RAKIT, a Dutch intelligence test, were administered to 209 twin pairs. The subtests were categorized as either verbal or nonverbal. The genetic covariance structure displayed 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. Plenum Publishing Corporation, 2000 Specific cognitive abilities nationallicence factor models nationallicence heritability nationallicence children nationallicence Rietveld M. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut van Baal G. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut Dolan C. Department of Psychology, Universiteit van Amsterdam, Amsterdam, The Netherlands aut Boomsma D. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut Behavior Genetics Kluwer Academic Publishers-Plenum Publishers 30/1(2000-01-01), 29-40 0001-8244 30:1<29 2000 30 10519 https://doi.org/10.1023/A:1002034509854 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002034509854 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rietveld M. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut NATIONALLICENCE 700 1- van Baal G. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut NATIONALLICENCE 700 1- Dolan C. Department of Psychology, Universiteit van Amsterdam, Amsterdam, The Netherlands aut NATIONALLICENCE 700 1- Boomsma D. Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands aut NATIONALLICENCE 773 0- Behavior Genetics Kluwer Academic Publishers-Plenum Publishers 30/1(2000-01-01), 29-40 0001-8244 30:1<29 2000 30 10519 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer