Abstract:
:Although over 50 twin and adoption studies have been performed on the genetic architecture of antisocial behaviour, far fewer studies have investigated prosocial behaviour, and none have done so on a non-western population. The present study examined mothers' ratings of prosocial behaviour in 514 pairs of 2- to 9-year-old South Korean monozygotic and dizygotic twins. Correlational analyses showed a tendency of increasing genetic effects and decreasing shared environmental effects with age although shared family environment effects and the moderating effects of age did not attain statistical significance in model-fitting analyses. The best-fitting model indicated that 55% (95% CI: 45-64%) of the variance in the 2- to 9-year-olds' prosocial behaviour was due to genetic factors and 45% (95% CI: 36-55%) was due to non-shared environmental factors. It is concluded that genetic and environmental influences on prosocial behaviour in young South Koreans are mostly similar to those in western samples.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Hur YM,Rushton JPdoi
10.1098/rsbl.2007.0365subject
Has Abstractpub_date
2007-12-22 00:00:00pages
664-6issue
6eissn
1744-9561issn
1744-957Xpii
H5683214202V8372journal_volume
3pub_type
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