PMID: 20629329Jul 16, 2010Paper

The effect of genetic and environmental factors on externalizing behaviors of twin children

Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition
Hui FangYi Huang

Abstract

To explore the effect of genetic and environmental factors on externalizing behaviors of children. A total of 168 twin pairs aged 6-16 years were recruited. Their parents completed Achenbach Child Behavior Checklist (CBCL) to evaluate the children's externalizing behaviors. The parents also completed FACESII-CV and GHQ-12 to assess their family environment. Structural equation modeling was performed to evaluate the effects of additive genetic factors (A), common environmental factors (C) and individual-specific environmental factors (E) on the externalizing behaviors. The effect of A, C, and E on externalizing behaviors were 0.39 (95% CI: 0.22-0.62), 0.51 (95% CI: 0.28-0.67), and 0.10 (95% Cl: 0.07-0.15), respectively. Significant correlations were found between the children's externalizing behaviors and the total GHQ-12 scores of their fathers and mothers (r = 0.24, P < 0.05; r = 0.30, P < 0.05). The externalizing behaviors were also correlated with family adaptability (r = 0.27, P< 0.01). The logistic regression identified mother's habits, such as smoking and drinking as risk factors of their children's externalizing behaviors. Externalizing behaviors are mainly affected by shared environmental factors. Externalizing behavior...Continue Reading

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