Effectiveness of multifamily group therapy on solving parent-adolescent conflicts and reduction of aggression in 14-15 years old girls in Mashhad

This research has been conducted to evaluate the effectiveness of group therapy on solving parent-adolescent conflicts and reduction of aggression in young adult children. Research method was chosen to be semi-experimental with pre-test، post-test، witness-group and repeated measurement. Research society consisted of 25 young adult girl between 14 and 15 years of age and their parents which were chosen voluntarily among people who came to psychological clinics of regions 4 and 5 of ministry of education in Mashhad. To obtain preliminary data، to measure the severity of conflicts PCRS was utilized and to measure aggressive behavior of children Aggression Questionnaire of Boss and Perry was used. Analysis of variance with repeated measurement and LSD follow up test was used to compare mean values. Results show that the success of group therapy with multiple families involved، in solving conflicts (P < 0. 05). Results also indicated that group therapy has meaningfully increased positive feelings and dialogue between adolescents and their parents in comparison with two other control groups. However the hypothesis of reduction of aggression was not supported statistically.