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Abstract: Aim and Background: The exact review of the prevalence of internalized and externalized disorders in adolescence is essential to design and prepares appropriate remedial services that aimed at reducing the negative consequences and subsequent growth of mental disorders and improving adolescent functioning. The aim of this study is investigation of prevalence of internalized and externalized behavioral problems among middle school boys Zanjan city. Methods and Materials: The study population consisted of all male students in Zanjan middle schools in the academic year 91-90 . For sampling, by using random cluster sampling 300 students were selected as sample and Achenbach Adolescent self-evaluation questionnaire (YSR) was completed by them. Finally, after excluding incomplete questionnaires, 292 completed questionnaires were entered into the analysis. Findings: Result showed that prevalence of internalized and externalized problems according to clinical classification , on a scale based on DSM are, respectively, 3 percent and 4.5 percent and According to the border classification, respectively, are 6.4 percent and 8 percent. In the clinical category of internalized disorders, the highest prevalence rate is somatization (8.2 percent) and in the clinical category of externalized disorders, the highest prevalence rate, is conduct disorder (8.2 percent). In the borderline category of internalized disorders, the highest prevalence rate is depression and in the externalized disorders, the highest prevalence rate, is oppositional defiant disorder. Conclusions: Considering that there are internalized and externalized problems among adolescents, the need for designing treatment and prevention programs is felt.

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Aim and Background: Psychodrama is a type of emotional discharge that reopens a specific person's personality problem and presents aspects of his life and its comparison with cognitive-behavioral therapy can determine their effectiveness; Therefore, the aim of the present study was to compare the effectiveness of cognitive-behavioral and Psychodrama therapy on the symptoms of externalized disorders in children aged 7 to 12 years.
Methods and Materials: The research method is quasi-experimental (quasi-experimental) studies with pre-test, post-test and follow-up with a control group. The sample group was available among 24 children who were registered at Ava Mehr Pasargad Counseling Center to diagnose the symptoms of externalized disorder and met the necessary criteria to participate in the study, 24 people were randomly selected. They were divided into two experimental groups and one control group. Cognitive-behavioral and Psychodrama were performed for the experimental groups, but the control group did not receive any special intervention. The research instruments included the Achenbach Child Behavior Inventory Questionnaire (parents' version). Analysis of covariance and Tukey post hoc test were used to analyze the data and examine the relationships between variables.  
Findings: The results showed that there was no significant difference between the effectiveness of cognitive-behavioral therapy and psychodrama therapy in the variables of aggressive behavior and law-breaking behavior in the post-test stage (P≥0.001) but there was a significant difference in the follow-up stage in the law-breaking behavior variable. .000.001) According to the effect size values for the variables of aggressive behavior and law-breaking behavior in cognitive-behavioral therapy and psychodrama, it was found that the effectiveness of psychodrama is more than cognitive-behavioral therapy (P≤0.001).
Conclusions: It seems that cognitive-behavioral therapy is more useful than psychodrama in improving aggressive behaviors.