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Individual Differences In Multiple Dimensions Of Aggression: A Univariate And Multivariate Genetic Analysis, Philip Vernon, Julie Mccarthy, Andrew Johnson, Kerry Jang, Julie Harris
Individual Differences In Multiple Dimensions Of Aggression: A Univariate And Multivariate Genetic Analysis, Philip Vernon, Julie Mccarthy, Andrew Johnson, Kerry Jang, Julie Harris
Andrew M. Johnson
Previous behaviour genetic studies of aggression have yielded inconsistent results: reported heritabilities for different types of aggressive behaviour ranging from 0 to 0.98. In the present study, 247 adult twin pairs (183 MZ pairs; 64 same-sex DZ pairs) were administered seven self-report questionnaires which yielded 18 measures of aggression. Univariate genetic analyses showed moderate to high heritabilities for 14 of these 18 measures and for a general aggression factor and three correlated aggression factors extracted from the measures. Multivariate genetic analyses showed sizeable genetic correlations between the different dimensions of aggression. Thus, individual differences in many types of aggressive behaviour …