title: Genetic and environmental influences on antisocial behavior: a meta-analysis of twin and adoption studies.
abstract: A meta-analysis of 51 twin and adoption studies was conducted to estimate the magnitude of genetic and environmental influences on antisocial behavior. The best fitting model included moderate proportions of variance due to additive genetic influences (.32), nonadditive genetic influences (.09), shared environmental influences (.16), and nonshared environmental influences (.43). The magnitude of familial influences (i.e., both genetic and shared environmental influences) was lower in parent-offspring adoption studies than in both twin studies and sibling adoption studies. Operationalization, assessment method, zygosity determination method, and age were significant moderators of the magnitude of genetic and environmental influences on antisocial behavior, but there were no significant differences in the magnitude of genetic and environmental influences for males and females.
authors: Department of Psychology, Emory University, USA. soo.rhee@colorado.edu
authors: Soo Hyun
authors: SH
authors: Rhee
authors: Irwin D
authors: ID
authors: Waldman
mesh_terms: D000293:Adolescent; D000300:Adoption; D000328:Adult; D000367:Age Factors; D000374:Aggression / Q000523:psychology; D000987:Antisocial Personality Disorder / Q000235:genetics* / Q000523:psychology*; D002648:Child; D003418:Criminology; D004777:Environment; D005260:Female; D020022:Genetic Predisposition to Disease / Q000523:psychology*; D006801:Humans; D007604:Juvenile Delinquency / Q000523:psychology; D008297:Male; D008960:Models, Psychological; D011569:Psychiatric Status Rating Scales; D012737:Sex Factors; D014427:Twins / Q000235:genetics* / Q000523:psychology*