Introduction: Adolescence is period of independence, expressing different opinions and struggling with parents. During this time, conflicts of adolescents with parents are increased and sometimes will be troublesome. However, having a good relationship with parents is very important to adolescents. Objectives: The purpose of this study was to examine the Effectiveness of group therapy of transactional analysis to reduce conflicts between parents and adolescents. Methods: This was a Quasi-Experimental study with pre-test and posttest and control group .The research populations were all freshmen high school students of Neyshaburin academic years of 2011- 2012.Twentystudents were selected using random cluster sampling and were replaced in both experimental and control groups. The experimental group participated in group counseling of transactional analysis foreleven75 -minute sessions. In this study, two questionnaires were used :(1) a Demographic Survey, (2) child- Parent Conflict Survey. The study utilized the statistical univariate analysis of covariance (Ankova) for statistical analysis. Results: The results of multivariate analysis of covariance showed that group therapy based on the transactional analysis lead to a significant reduction in conflicts between adolescents and parents (P<0.0001). In other words, the scores of the experimental group were significantly lower than the control group. Conclusion:Based on the findings of this study, it can be concluded that group therapy based on the transactional analysis may lead to reduction of conflicts between adolescents and parents.

Keywords