The objective of this study is to compare the effectiveness of solution-focused brief therapy, the quadripartite model of social competence, and a fusion model of these two methods on increasing social competence of female students residing in Tehran dormitories. The studied sample includes 60 patients, randomly placed in three experimental groups and one control group. Analysis of covariance has been used to test the difference between group means. The results demonstrate that all three treatment methods were effective on the increase of social adjustment in the students. While no significant differences were observed between the solution-focused and the quadripartite model of social competence treatment methods, the combination model exhibits superior efficacy on the increase of social adjustment in the test subjects.