PENGARUH LAYANAN BIMBINGAN KELOMPOK DENGAN PENDEKATAN BEHAVIORAL TERHADAP KEPERCAYAAN DIRI SISWA DI SMA NEGERI 9 KOTA BENGKULU

Abstract

The problem in this study was the low self-confidence of tenth-grade students in class X.5 at SMA Negeri 9 Kota Bengkulu, characterized by low confidence in their abilities, fear of expressing opinions, low participation in learning activities, and a tendency to depend on others. This study aimed to examine changes in students' self-confidence after receiving group guidance  services using a behavioral approach. The study employed a quantitative approach with a One Group Pretest-Posttest Design. The participants were 10 students identified as having low self-confidence based on the pretest. Data were collected using a 30-item valid self-confidence questionnaire with a Cronbach's Alpha reliability coefficient of 0.917. The intervention consisted of four group guidance sessions using behavioral rehearsal, modeling, and positive reinforcement. Data were analyzed using the Wilcoxon Signed Rank Test with SPSS 20. Before the intervention, all participants (100%) were in the low category. After the intervention, 3 students (30%) were in the very high category, 5 (50%) in the high category, and 2 (20%) in the moderate category. The Wilcoxon test yielded Z = -2.803 and Asymp. Sig. (2-tailed) = 0.005. The effect size calculated from the Z statistic was r = 0.886. These findings indicate a statistically significant difference between pretest and posttest self-confidence scores. Because the study did not include a control group, the findings should be interpreted as preliminary evidence of change following the intervention rather than definitive causal evidence.