Abstract

Introduction - Adolescents begin to face physical, cognitive, social and emotional changes that will affect development in the next stage. This study aims to determine the effect of therapeutic group therapy and problem-solving therapy on adolescent developmental aspects in vocational high schools for preventing drug use.

Method - This study uses a quasi-experimental design pre-post test without control group. The sample in this study were 62 adolescents in vocational high schools who were selected using purposive sampling technique and systematic random sampling. The group was given therapeutic group therapy for 6 sessions and problem-solving therapy for 5 sessions. The analysis used repeated ANOVA tests and continued with a post hoc paired wise comparison test.

Results - The developmental aspects of adolescents increased significantly (p-value <.05), which was described higher after obtaining therapeutic group therapy and problem-solving therapy, and remained in the category of good development aspects; there were significant differences from three measurement times.

Conclusion - Therapeutic group therapy and problem-solving therapy are recommended to be carried out by mental specialist nurses in improving development aspects as a protective factor in vocational high school students for preventing drug use.