This research is motivated from the observation that researchers did to students of class VII SMP PGRI 01 Wagir, which showed that 7 students still have a low level of emotional exploration. A low level of exploration emotions can hinder the development of the students expressing their feelings and can lead to miscommunication when interacting with people around. Therefore, an increase in the level of students' exploration of emotion is indispensable for students of SMP PGRI 01 Wagir. The

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... used in this research was to design experimental method Quasi Experiment, using the pattern of pre-test and post-test group. The subjects used in this study are 7 students of class VII SMP PGRI 01 Wagir. Instrument used in this research is the exploration of the emotional scale that has been expert tested. Data were analyzed using test Wilcoxon the calculations using SPSS 16.0 for Windows. Based on the results of the study showed that there is difference between the pre-test and post-test. This increased level of exploration of students can be seen from the total score 7 students in the pretest to the total amount is 26, while the posttest after being given treatment using the technique of expressive writing the number is 147. Based on test Wilcoxon between pretest and posttest generate significant value (2-tailed) ie 0,018 <0.05, which means that Ho was rejected. So there is a difference between before administration treatment and after administration of treatment, so that it can be concluded that the technique is expressive writing effective to explore the emotions of students of class VII SMP PGRI 01 Wagir.