The purpose of this research was to determine the effect of volleyball skills training and problem solving on adolescent girls self-efficacy. The research method was semi-experimental and conducted in as pre-test and post-test with four experimental groups.The research statistical population consisted of all first grade students of Broujen high schools in the academic year of 2009-2010(1388-89s.c.). The research sample included 60 junior high school students who were chosen by two-stage sampling and were assigned to four groups(n=15) of teaching volleyball based on problem solving technique, teaching volleyball, teaching problem solving, and control. After taking self-efficacy pre- test, the students of interventional groups took part in 90-minutes training program for 10 sessions. Data were gathered by Self-efficacy Scale(Sherer ,1982) . Analysis of covariance(ANCOVA), analysis of variance(ANOVA) and Tukey post hoc tests were used to analyze the data . Results indicated that there were significant differences in the effect of teaching volleyball and problem solving on adolescent girls self efficacy between the four groups(F (3,54) =25.89, p=0.001). Generally, the results reveal that the mixed program caused further improvement of students self-efficacy.
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