title: Age changes in the causes of individual differences in conservatism.
abstract: Age-related changes are analyzed in the correlation of 3416 monozygotic and 3780 dizygotic U.S. twin pairs aged between 9 and 75+ years for conservatism scores derived from a 28-item social attitude inventory. The effects of the shared environment are overwhelming in twins aged 20 years or younger. In older twins, genetic effects appear to play a larger role. A more dynamic conception of the interaction between genes and environment in the development of complex human differences is needed.
authors.affiliation: Department of Human Genetics, Virginia Commonwealth University, Richmond 23284, USA.
authors.forename: L
authors.initials: L
authors.lastname: Eaves
authors.forename: N
authors.initials: N
authors.lastname: Martin
authors.forename: A
authors.initials: A
authors.lastname: Heath
authors.forename: R
authors.initials: R
authors.lastname: Schieken
authors.forename: J
authors.initials: J
authors.lastname: Meyer
authors.forename: J
authors.initials: J
authors.lastname: Silberg
authors.forename: M
authors.initials: M
authors.lastname: Neale
authors.forename: L
authors.initials: L
authors.lastname: Corey
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000235:genetics* / Q000523:psychology; D001290:Attitude; D002648:Child; D005260:Female; D006801:Humans; D007206:Individuality; D008297:Male; D008875:Middle Aged; D010551:Personality / Q000235:genetics*; D012925:Social Conformity; D012931:Social Environment; D012945:Social Values; D014429:Twins, Dizygotic / Q000235:genetics / Q000523:psychology; D014430:Twins, Monozygotic / Q000235:genetics / Q000523:psychology