Abstract
This study aims to determine the role of positive thinking, social support for post traumatic stress disorder (ptsd) in high school students who are earthquake survivors in Lombok. This research is a quantitative research with the sampling technique using cluster random sampling. The research subjects were students of class XI at three SMANs in East Lombok district with a total of 103 students. Data collection in this study used a scale of post traumatic stress disorder, a scale of positive thinking and a scale of social support. Hypothesis testing is done using regression analysis techniques. The results of this study indicate that there is a very significant role between positive thinking, social support for post traumatic stress disorder, indicated by the correlation number F = 26.093 with p = 0.000 (p <0.01). post traumatic stress disorder is indicated by the number t = -4,104 with p = 0,000 (p <0.01). There is a very significant role between social support for post traumatic stress disorder as indicated by the number t = -3.223 with p = 0.002 (p <0.01).