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The objective of the present study was to investigate the factor structure, and the reliability and validity of the Japanese version of the Obsessive-Compulsive Inventory-Revised (OCI-R). The participants included 214 university students enrolled at two universities in a metropolitan area. They completed the OCI-R and other related scales, and of these, 38 students answered the OCI-R again two weeks later. Based on a factor analysis, the six-factor structure, the same as the original version, was confirmed. For reliability, internal consistency and test-retest reliability were evaluated and both internal consistency and test-retest reliability were confirmed. For convergent validity, we calculated the correlation coefficient using the Japanese version of the Maudsley Obsessional-Compulsive Inventory, which measures obsessive-compulsive symptoms. For concurrent validity, we calculated the correlation coefficient using the Patient Health Questionnaire-9, which measures depressive symptoms; and the Generalized Anxiety Disorder-7, which measures anxiety symptoms. Overall, the factor structure, the reliability, and the validity of the Japanese version of the OCI-R were all confirmed in this study. In the future, we will investigate whether the same results can be obtained in clinical groups.

Past research indicates that Self-Oriented Perfectionism (SOP: P. L. Hewitt & G. L. Flett, 1991) has been linked to psychopathology but can have both positive and negative elements. The purpose of the present study is to examine whether the relationship of SOP to positive and negative affect would be mediated by the presence of specific cognitions regarding “Personal Standards (PS),” and “Concern over Mistakes (CM)” as well as goal motivations. Two mediations involved in SOP were hypothesized: (1) in the presence of approach goals, the cognition of PS emerges from activated SOP and leads to positive affect; and (2) in the presence of avoidant goals, the cognition of CM emerges from activated SOP and leads to negative affect. In Study 1, 358 college students completed the research questionnaire, and structural equation modeling was used to test the mediation model. In Study 2, 60 participants, 30 rated high and 30 rated low in SOP, were presented with either an approach or an avoidant goal for an experimental task, and asked to rate their perfectionism cognitions and affects. The findings provided partial support for the hypotheses.

Background Cognitive behavior therapy (CBT) is regarded as an effective treatment for social anxiety disorder (SAD) in Europe and North America. Individual CBT might be acceptable and effective for patients with SAD even in non-Western cultures; therefore, we conducted a feasibility study of individual CBT for SAD in Japanese clinical settings. We also examined the baseline predictors of outcomes associated with receiving CBT. Methods This single-arm trial employed a 14-week individual CBT intervention. The primary outcome was the self-rated Liebowitz Social Anxiety Scale, with secondary measurements of other social anxiety and depressive severity. Assessments were conducted at baseline, after a waiting period before CBT, during CBT, and after CBT. Results Of the 19 subjects screened, 15 were eligible for the study and completed the outcome measures at all assessment points. Receiving CBT led to significant improvements in primary and secondary SAD severity (ps < .001). The mean total score on the Liebowitz Social Anxiety Scale improved from 91.8 to 51.7 (before CBT to after CBT), and the within-group effect size at the end-point assessment was large (Cohen’s d = 1.71). After CBT, 73% of participants were judged to be treatment responders, and 40% met the criteria for remission. We found no significant baseline predictors of those outcomes. Conclusion Despite several limitations, our treatment—which comprises a 14-week, individual CBT program—seems feasible and may achieve favorable treatment outcomes for SAD in Japanese clinical settings. Further controlled trials are required in order to address the limitations of this study. Trial registration UMIN-CTR UMIN000005897