title: Heritability of preferred thinking styles and a genetic link to working memory capacity.
abstract: Genetic and environmental contributions to preferences for rational and experiential thinking were examined in 100 pairs of monozygotic and 73 pairs of same-sex dizygotic Australian twins. Univariate analyses for experiential thinking and working memory capacity (WMC) revealed genetic effects accounted for 44% and 39% of the variability respectively, with non-shared environmental effects accounting for the balance. For rational thinking, the univariate models produced ambiguous results about the relative roles of heritability and shared environment, but a subsequent Cholesky analysis suggested genetic effects accounted for 34%, with the balance, 66%, explained by the non-shared environment. The Cholesky analysis revealed that shared genetic effects accounted for 60%, and non-shared environment accounted for 40% of the relationship between preference for rational thinking and WMC.
authors.affiliation: University of New England,Armidale,New South Wales,Australia.
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Fletcher
authors.affiliation: University of New England,Armidale,New South Wales,Australia.
authors.forename: Anthony D G
authors.initials: AD
authors.lastname: Marks
authors.affiliation: University of New England,Armidale,New South Wales,Australia.
authors.forename: Donald W
authors.initials: DW
authors.lastname: Hine
authors.affiliation: University of New England,Armidale,New South Wales,Australia.
authors.forename: William L
authors.initials: WL
authors.lastname: Coventry
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D059647:Gene-Environment Interaction; D006801:Humans; D008297:Male; D008570:Memory, Short-Term; D008875:Middle Aged; D013850:Thinking; D014427:Twins / Q000235:genetics*; D055815:Young Adult