<![CDATA[During adolescence, individuals spend more time in social life outside the home, such as socializing with peers and socializing at school and in the community. Self-control is the ability of adolescents to control themselves. If self-control is successfully improved, then the self-control is high. Conversely, low self-control indicates that they are less able to control themselves. This study aims to test the effectiveness of agentic group guidance to improve self-control of Minangkabau ethnic adolescents. This study is a quantitative study with a quasi-experimental method with a Nonequivalent Control Group Design on 22 students of SMA Negeri 1 Batipuh who were divided into experimental and control groups. The research instrument was a Likert scale self-control questionnaire, analyzed using the N-Gain, Wilcoxon, and Mann Whitney tests. The results showed that the average pretest score of the experimental group was 131.63 increased to 154.38 in the posttest, with an N-Gain of 58.05 (quite effective category). Meanwhile, the control group increased from 124.91 to 158.18, with an N-Gain of 46.91 (less effective category). The Mann Whitney test produced Z = -2.66 and Sig. = 0.008 (< 0.05), indicating that there is a significant difference between the two groups.]]>
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