title: Is there a genetic correlation between general factors of intelligence and personality?
abstract: We tested a hypothesis that there is no genetic correlation between general factors of intelligence and personality, despite both having been selected for in human evolution. This was done using twin samples from Australia, the United States, the Netherlands, Great Britain, and Croatia, comprising altogether 1,748 monozygotic and 1,329 same-sex dizygotic twin pairs. Although parameters in the model-fitting differed among the twin samples, the genetic correlation between the two general factors could be set to zero, with a better fit if the U.S. sample was excepted.
authors.affiliation: Psychology Department,University of Texas,Austin,Texas,USA.
authors.forename: John C
authors.initials: JC
authors.lastname: Loehlin
authors.affiliation: Department of Biological Psychology,VU University,Amsterdam,the Netherlands.
authors.forename: Meike
authors.initials: M
authors.lastname: Bartels
authors.affiliation: Department of Biological Psychology,VU University,Amsterdam,the Netherlands.
authors.forename: Dorret I
authors.initials: DI
authors.lastname: Boomsma
authors.affiliation: Department of Psychology,Faculty of Social Sciences and Humanities,University of Zagreb,Zagreb,Croatia.
authors.forename: Denis
authors.initials: D
authors.lastname: Bratko
authors.affiliation: QIMR Berghofer Medical Research Institute,Brisbane,Queensland,Australia.
authors.forename: Nicholas G
authors.initials: NG
authors.lastname: Martin
authors.affiliation: Jamul,CA,USA.
authors.forename: Robert C
authors.initials: RC
authors.lastname: Nichols
authors.affiliation: QIMR Berghofer Medical Research Institute,Brisbane,Queensland,Australia.
authors.forename: Margaret J
authors.initials: MJ
authors.lastname: Wright
mesh_terms: D000293:Adolescent; D001315:Australia; D002648:Child; D005060:Europe; D005163:Factor Analysis, Statistical; D005260:Female; D059647:Gene-Environment Interaction; D006801:Humans; D007360:Intelligence / Q000235:genetics*; D007361:Intelligence Tests; D008297:Male; D008957:Models, Genetic; D010551:Personality / Q000235:genetics*; D010552:Personality Assessment; D010555:Personality Inventory; D012641:Selection, Genetic; D014429:Twins, Dizygotic / Q000235:genetics* / Q000523:psychology; D014430:Twins, Monozygotic / Q000235:genetics* / Q000523:psychology; D014481:United States
keywords: general factor of intelligence; general factor of personality; heritability; life history theory; mutation-selection balance; twins