Ali Mohammad Nazari Aim: The current meta-analysis aims to investigate the results obtained from the previous research on the role of family in juvenile delinquency. Method: To this end, 40 researches of Tehran University’s theses were compiled among which 20 researches appropriate for the analysis were selected. The research selection for the current meta-analysis was based on the following methodological factors: research questions, hypotheses, goals, population, sampling, procedure, statistical methodology, and reliability and validity of questionnaires. Statistical analyses were accomplished using the Comprehensive Meta-analysis Software. Results: The results of the current study which were obtained using the effect size combination of Schmit & Hantez showed a good support for the relationship between juvenile delinquency and the following factors: family behavior, divorce and parents’ separation, parents’ education, parents monitoring, economic situation of the family, religious beliefs of the family, family’s criminal record, and juvenile delinquency. However, the relationship between parents’ quarrel and juvenile delinquency didn’t receive any support. Conclusions: The results of the study may be used for curriculum planning, development, and treatment in schools, universities, counseling and psychotherapy centers for the aim of preventing delinquencies and reducing the negative effects of family-related factors in juvenile delinquencies.
