title: [A twin study on genetic and environmental factors of adolescents violence behaviors].
abstract: OBJECTIVE
  To explore the influence of genetic and environmental factors on adolescents violence behaviors.
  
  
  METHODS
  The violence behaviors of 111 twin pairs from Chongqing (aged from 11 to 18 years) were investigated with risk behavior questionnaire-adolescent (RBQ-A). The Parenting Styles and Dimensions Questionnaire (PSDQ) and Stressful Life Event (SLE) and the General Functioning Scale of the MacMaster Family Activity Device (FAD-GFS) were applied to assess their environment factors. Structural equation modeling was performed to evaluate the effects of the additive genetic factors (A), shared environment factors (C) and individual specific environmental factors (E) on the adolescents violence behaviors.
  
  
  RESULTS
  The effects of A and E on adolescents violence behaviors were 0.41 (95% CI 0.19-0.58) and 0.59 (95% CI 0.42-0.81) respectively. There were significantly negative correlation between violence behaviors and authoritative-parenting-style (r = -0.140, P < 0.05), the score of adolescents violence behaviors was positively correlated with repressive-parenting-style score (r = 0.133, P < 0.05), the score of adolescents violence behaviors were not significantly correlated with the family functions, stress life events and the parenting education level and occupation.
  
  
  CONCLUSIONS
  Adolescents violence behaviors were influenced by additive genetic factors and individual specific environmental factors. Environmental plays an important role. It should not been ignored that parental rearing pattern play a role in adolescents violence behaviors.
authors.forename: Wenfen
authors.initials: W
authors.lastname: Zhu
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Fu
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Hu
authors.forename: Yingcheng
authors.initials: Y
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Deng
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Xingshun
authors.initials: X
authors.lastname: Ma
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D004777:Environment; D006801:Humans; D007857:Leadership; D016487:Parenting / Q000523:psychology*; D010290:Parents; D012309:Risk-Taking; D012931:Social Environment; D011795:Surveys and Questionnaires; D014427:Twins / Q000235:genetics* / Q000523:psychology*; D014754:Violence