Whether there effect of the used video on group guidance services to aggressive behavior?

The purpose of this study is to examine the effectiveness of Group Guidance with Video (G2-V) services in reducing aggressive behavior of junior high school students. The approach of this research is Pre-Experiment with the design of one group pretest-posttest design. The subjects in this study were 10 students (consisting of 5 male and 5 female) junior high schools in North Sumatra, which were obtained through purposive sampling. The instrument used was an aggressive behavior instrument with a scale Likert model. Data were analyzed using nonparametric statistical techniques using the Wilcoxon Signed Ranks Test and stacking Rasch models. The results of the analysis show that there is an influence of G2-V in reducing the aggressive behavior of junior high school students in North Sumatra. The implications of guidance and counseling services are discussed further.