RESUMEN
Today, the psychological and behavioral science experts pay attention to the problem-solving skill as a basic skill. Improving the problem-solving skill is better done through psychological trainings in the form of a group in which communication is the most important issue. Therefore, the purpose of the present study is to investigate the effectiveness of integrative group therapy on the problem-solving skill. This study is an experimental study with pretest-posttest approach. Thirty clients who were referring to the Counseling and Psychological Services Center of Ferdowsi University of Mashhad were chosen based on screening method. In addition, they were randomly divided into two equal groups: experimental and control groups [13 participants each]. Problem-solving questionnaire was used to collect data as well as the experimental intervention was integrative group therapy that was administrated during 8 weekly two-hour sessions. Mean and standard deviation were used for data analysis in the descriptive level and covariate method was used at the inference level [ANCOVA]. The results suggest that the problem-solving skills in the experimental group were significantly increased. Moreover, the significant difference was observed in subscales closeness, control, confidence and creative. Integrative group therapy could be an effective intervention for improving problem-solving skills