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  • Title: [A twin study on genetic and environmental factors of children's prosocial behavior].
    Author: Situ MJ, Zhang Y, Li T, Gao X, Zhang XW, Fang H, Huang Y.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2010 Jun; 27(3):324-8. PubMed ID: 20533275.
    Abstract:
    OBJECTIVE: Using quantitative genetic analysis of twin study design to explore the impact of genetic and environmental factors on the prosocial behaviors of children. METHODS: One hundred and forty-seven twin pairs from Chengdu area aged 6-16 were studied using parental information of Strengths and Difficulties Questionnaire (SDQ). SPSS13.0 and Mx software were used to analyze data, including nonparametric test, Pearson correlation, genetic analyses, etc. RESULTS: (1) Female children score higher than males on their prosocial behavior (Ps< 0.05), except less than 11 age group; (2) Shared environmental factors were the most important for children's prosocial behaviors(C=0.48,95%CI:0.09-0.73),then the genetic factors (A=0.27,95%CI:0-0.66) and the unshared environmental factors(E=0.25,95%CI:0.18-0.35); (3)Female and those who scored higher on their fact/ideal family adaptability and cohesion scored higher in their prosocial behaviors (r:0.17-0.29). On the contrary, those who had extreme conditions during pregnancy/ perinatal period or whose caretaker had discordant opinions on parenting scored lower (r: -0.16 to 0.28). CONCLUSION: Children's prosocial behaviors were influenced by genetic and environmental factors including family function and parenting environment, and genetic impact differs in different age and sex.
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