トラウマに関連する反すうと侵入思考の関連および出来事からの距離化を促進するよう構造化された筆記の効果の検討

The purposes of this study were to examine the relationship between trauma-related rumination and intrusive thinking, and the effects of structured disclosure to facilitate distancing from the event on the trauma-related rumination, posttraumatic stress reactions (PTSR). In Study I, 38 undergraduates who maintain 9 or more scores of Impact of Event Scale (IES) for one month responded broad-trauma related rumination scale (BTRRS) and IES two times. Regression analysis revealed that there was association with the scores on changes of both factors of BTRRS (broad trauma-related rumination and degree of distancing from the broad trauma) and the scores on changes of intrusion factor of IES（R2=.162，p=.007；R2=.253，p=.001）. In Study II, participants in the Study I were randomly assigned into three groups: the structured disclosure group(n=8), the free disclosure group(n=7) and the control group(n=8). The structured disclosure group was asked to write the event to facilitate distancing from it. In particular, they wrote the event, and after that wrote it again from the other person's perspective. The free disclosure group wrote the event and the event-related emotion freely. The control group wrote their behavior on the day before and before experiment, and the plan after experiment without emotion. Results showed that the structured disclosure increased short-term distancing more than other groups, but did not increase long-term one and decrease the rumination. Although all participants in groups decreased PTSR and the distress about the event after one month of disclosure, the differences on groups were not significant. Results of this study were discussed from the theoretical standpoints.