Naslov
The genetic and environmental correlation between verbal and spatial intelligence

Autori
Bratko, Denis

Izvornik
Review of psychology (1330-6812) 3 (1996), 1-2; 37-46

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
verbal intelligence ; spatial intelligence ; behavioral genetics

Sažetak
The genetic and environmental correlations between measures of verbal and spatial intelligence were estimated using the methodology of multivariate behavioral genetics. Two verbal (word fluency and vocabulary)and two spatial (visualization and spatial orientation) test scores were available for the 71 monozygotic and 78 dizygotic pairs of twins. A multivariate model including additive genetic and within-family environmental factors was specified to detect common sources of variance for the measures of verbal and spatial intelligence. The model fitted data well, and the maximum likelihood estimates of genetic and environmental correlations were calculated. The genetic correlations among measures of verbal and spatial intelligence varied in magnitude and exhibited a pattern similar to corresponding phenotypic correlations. On the other hand, correlations due to the within-family environmental influences were generally small. Thus, it was concluded that phenotypic correlations between measures of verbal and spatial intelligence may be largely due to genetic influences

Izvorni jezik
Engleski

Znanstvena područja
Psihologija

POVEZANOST RADA