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Comparative Study
. 2004 Dec 22;271(1557):2583-5.
doi: 10.1098/rspb.2004.2941.

Genetic and environmental contributions to pro-social attitudes: a twin study of social responsibility

J Philippe Rushton  1
Affiliations
Comparative Study

Genetic and environmental contributions to pro-social attitudes: a twin study of social responsibility

J Philippe Rushton. Proc Biol Sci. .

Abstract

Although 51 twin and adoption studies have been performed on the genetic architecture of antisocial behaviour, only four previous studies have examined a genetic contribution to pro-social behaviour. Earlier work by the author with the University of London Institute of Psychiatry Adult Twin Register found that genes contributed approximately half of the variance to measures of self-report altruism, empathy, nurturance and aggression, including acts of violence. The present study extends those results by using a 22-item Social Responsibility Questionnaire with 174 pairs of monozygotic twins and 148 pairs of dizygotic twins. Forty-two per cent of the reliable variance was due to the twins' genes, 23% to the twins' common environment and the remainder to the twins' non-shared environment.

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