Bakhrudin All Habsy, Adelia Kusuma Sriandi, Elisabeth Christiana, Michael Adeniyi Omoyemiju
This study investigated the effectiveness of group counseling based on Acceptance and Commitment Therapy (ACT) in enhancing self-confidence among junior high school students, using a true experimental pretest-posttest control group design. Two instruments were employed: treatment and measurement. The treatment instrument consisted of a guide for implementing group counseling, while the measurement instrument was a self-confidence inventory. The findings demonstrated that ACT-based group counseling effectively enhances self-confidence among junior high school students. The study provided two recommendations: (i) for guidance and counseling teachers, ACT-based group counseling can be applied to strengthen students’ self-confidence and support their developmental understanding; and (ii) for future researchers, given that ACT-based counseling incorporates six core processes (acceptance, cognitive defusion, being present, self-as-context, values, and committed action). Future studies may explore its effectiveness with additional or alternative techniques. © 2025 Bumi Publikasi Nusantara.
Universitas Negeri Surabaya, Surabaya, Indonesia; Obafemi Awolowo University, Osun, Nigeria
