Reliability and validity of the Japanese version of the Obsessive-Compulsive Inventory-Revised (OCI-R)

• Published in: Current psychology (New Brunswick, N.J.) N.J.), 2020-02, Vol.39 (1), p.89-95
• Main Authors: Koike, Haruna, Tsuchiyagaito, Aki, Hirano, Yoshiyuki, Oshima, Fumiyo, Asano, Kenichi, Sugiura, Yoshinori, Kobori, Osamu, Ishikawa, Ryotaro, Nishinaka, Hirofumi, Shimizu, Eiji, Nakagawa, Akiko
• Format: Article
• Language: English
• Subjects: Analysis; Anxiety; Behavioral Science and Psychology; Obsessive compulsive disorder; Psychology; Questionnaires; Social Sciences; Validity
• ISSN: 1046-1310; 1936-4733
• DOI: 10.1007/s12144-017-9741-2

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.