School-Based Intervention Program Based on Cognitive Behavioral Therapy for Japanese Students Affected by the Hiroshima Heavy Rain Disaster of July 2018

This study examined the effects of a group cognitive behavioral intervention on senior school students affected by the Hiroshima heavy rain disaster and investigated the effects of reducing depression by enhancing resilience. A total of 229 second-grade senior school students affected by the Hiroshima heavy rain disaster participated in the study. The intervention was performed in the following order: psychological education on daily stress, problem-solving training for daily stress, psychological education on traumatic reactions derived from traumatic experiences, and instruction on the merits of utilizing information acquired from the intervention in daily life. The results showed that the high-depression group's depression score was reduced by the intervention. Resilience score was increased both in the high- and low-depression groups as a result of the intervention. Therefore, the intervention program used in this study was proven effective in reducing depression and improving resilience. Prospectively, strategies for psychological support during and after large-scale disasters should be established by applying the findings obtained in this research.