<![CDATA[Bullying in schools remains a serious problem related to adolescents’ internal psychological state, particularly their emotional maturity. This study aims to examine the effect of group counseling based on Cognitive Behavioral Therapy (CBT) on improving emotional maturity among students with a tendency toward bullying behavior. This study employed a quantitative approach using a true experimental design: a Matched-Pairs Pretest-Posttest Control Group Design. The independent variable in this study was group CBT counseling, while the dependent variable was emotional maturity, measured using the Emotional Maturity Scale with 21 valid items. Subjects were selected through screening using the 18-item Bullying Behavior Scale from the entire population of 168 students. Sampling was conducted using a purposive sampling technique, with the inclusion criterion being students who scored in the high category for bullying tendencies. This resulted in a sample of 12 students, divided into an experimental group (n=6) that received CBT intervention and a control group (n=6) that received positive psychology intervention. Data analysis was performed using paired-samples t-tests and independent-samples t-tests with the assistance of the Jamovi software. The results of the paired samples t-test showed a significant increase in emotional maturity in the experimental group after receiving the CBT intervention (p < 0.001). The results of the independent samples t-test showed a significant difference between the posttest scores of the experimental group and the control group (p=0.001), with an effect size (Cohen’s d) of 1.335, which is classified as large. Based on these results, CBT-based group counseling was found to have a significant effect on improving emotional maturity in students with a tendency toward bullying behavior.]]>
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