title: Genetic and environmental variation on the California Psychological Inventory vector scales.
abstract: Three recently introduced vector scales for the California Psychological Inventory (CPI) were scored for the National Merit Twin Sample and subjected to a heredity-environment analysis. Confidence intervals for genetic and environmental parameters were obtained by a bootstrap method. Two of the scales, Internality (Vector 1) and Self-Realization (Vector 3), showed the substantial heritability and near-zero family environment effects typically found for personality scales, whereas Norm-Favoring (Vector 2) showed an appreciable effect of family environment and a nonsignificant heritability.
authors.affiliation: Department of Psychology, University of Texas, Austin 78712.
authors.forename: J C
authors.initials: JC
authors.lastname: Loehlin
authors.forename: H G
authors.initials: HG
authors.lastname: Gough
mesh_terms: D000124:Achievement; D006801:Humans; D007389:Internal-External Control; D010553:Personality Development; D010555:Personality Inventory; D011594:Psychometrics; D012931:Social Environment; D014427:Twins / Q000235:genetics*; D014429:Twins, Dizygotic / Q000235:genetics* / Q000523:psychology; D014430:Twins, Monozygotic / Q000235:genetics* / Q000523:psychology