The aim of the present study was to examine the effectiveness of family-based interventions parent-adolescent interaction and adolescents’ self-efficacy. For this purpose, 30 adolescents with behavioral disorder along with their parents were randomly divided to two experimental and control groups and the pretest tools were conducted for both groups. The participants filled out pretest questionnaires and demographic data form. The experimental group participated in a training program, but the control group received no training. The program was generally held in 15 sessions as 5 general and group sessions with the presence of fathers and mothers at the same time (without children), then 5 group sessions for mothers, three individual sessions for each adolescent and finally 2 sessions dedicated to each family with the presence of adolescent children under cognitive=behavioral training program. After the end of training, the posttests were administered simultaneously. The research tools included Self-Efficacy Questionnaire for Children (SEQ-C), Pianta’s Child-Parent Relationship Questionnaire (1994). Multivariate covariance analysis was used to analyze the data. The results indicated that family-based interventions would lead to the improvement of parent-adolescent interaction and the increase of self-efficacy in adolescents.
