<![CDATA[Abstract: This study aims to examine the effects of self management techniques in reducing the aggressive behaviour of students in SMKN 4 Pekanbaru. The quantitative research method was used in this study and the research was designed based on the one-group pretest – posttest design. The measuring instrument used in this study was the aggressive behavioural measurement scale consisting of 50 and 35 items before and after validation respectively. The validity score was calculated to be 0.396 and the reliability score was obtained as 0.948. The subject was determined by using purposive sampling technique, and it was obtained that 7 students in SMK 4 Pekanbaru were identified as having a high level of aggressive behaviour. The data were analysed by using the non-parametric statistical technique and were tested by using the Wilcoxon analysis test. This is known from "Test Statistics", known as Asymp. Sig. (2-tailed) worth 0.017. Because the value of 0.017 is smaller than <0.05, it can be concluded that "Ha is accepted". To that end, it can be concluded that there are differences in the scores of aggressive behavior before and after treatment given in the form of self management techniques. The results of the study showed that the there are differences in the scores of aggressive behaviour before and after treatment, in the form of self management techniques. Based on the calculations that have been done, the 71% Pre-test is in the very high category and 29% in the high category. Post-test was 71% in the medium category and 29% in the low category. Thus Ha is accepted and Ho is rejected. So that it can be concluded that the technique of self management can reduce the aggressive behavior of students of SMKN 4 Pekanbaru.Key Words: Self management, Aggressive behaviour]]>
