Objective: This study compared the effectiveness of two Adlerian and behavioral parent training approaches to reduce the severity of conduct disorder symptoms in children. Method: For this purpose, Barkley’s behavioral parent training program and STEP (Adlerian approach) were considered. Five schools were selected randomly from region 7 in Tehran and 60 parents whose 7-11 year old boys had received the highest scores on Child Symptom Inventory (CSI-4) were randomly assigned into Adlerian, Behavioral, and control groups. In order to analyze the data, Analysis of Covariance test, two-way ANOVA and Tukey and Bonferroni follow up tests were used. Results: Analysis of research findings showed that both Adlerian and Behavioral groups could, in comparison with control group, ameliorate severity of conduct disorder symptoms, but no significant difference was observed between the two experimental groups. Conclusion: Accordingly, we can suggest that these two parent training approaches are effective interventions for  children with CD.