Children's externalizing problem behavior is one of the most explored topics among parents, educators, and research scholars. The purpose of this study is to examine the developmental changes of externalizing problem behavior in the early years of poor children and adolescents and the influence of family factors such as family functioning and parental marital quality on the developmental changes. Seven hundred and seventy-eight early adolescents (M(age) = 13.7, SD = 2.53) from poor families were studied longitudinally for 14 months. The re...
