The Effectiveness of Assertive Training Techniques to Increase Self-Confidence of Vocational High School Students

Self-confidence is an attitude that must be possessed by every individual in carrying out daily life. The purpose of this study was to determine the effectiveness of group counseling assertive training techniques in increasing students' self-confidence. The population of this study is class XI students of SMK Negeri 6 Yogyakarta majoring in beauty 2, SPA and beauty therapy, and travel business which amounted to 94 students and the research sample amounted to six students. The approach used in the research is quantitative. Pre-experimental research design with one group pretest and posttest design model. The data were analyzed using the paired sample t-test formula with the results showing that group counseling services for assertive training techniques are effective for increasing student self-confidence. The highest increase in aspects of student confidence is seen in the optimistic aspect. The results of this study can be a reference for guidance and counseling teachers or counselors in schools in providing group counseling services to overcome the problem of low student confidence and for further research it is recommended to follow up with individual counseling services.