Citation

Gustavsson JP, Pedersen NL, Åsberg M, Schalling D. Pers. Individ. Dif. 1996; 21(6): 1067-1071.

Copyright

(Copyright © 1996, Elsevier Publishing)

DOI

10.1016/S0191-8869(96)00146-8

PMID

unavailable

Abstract

In this study a behavior-genetic approach was used to identify sources of individual differences in Aggression-, Hostility- and Anger-related (AHA) personality traits (as measured with Spielberger's anger scales and scales from the Karolinska Scales of Personality), based on a sample (N = 140 individuals) that comprised of monozygotic twin pairs reared together (Npairs = 26) or reared apart (Npairs = 15), and dizygotic twin pairs reared together (Npairs = 29). In general, the results suggest that environmental factors account for sibling similarity in hostility, whereas genetic factors account for sibling similarity in angry aggression and irritability (trait anger).