Psychometric properties of the Obsessive Compulsive Inventory-Revised among Icelandic college students

In the present study, the psychometric properties of the Obsessive Compulsive Inventory‐Revised (OCI‐R) (Foa, et al., 2002) were investigated. The OCI‐R was administered to a total of 816 Icelandic college students. The Maudsley Obsessive Compulsive Inventory (MOCI) and the Penn State Worry Questionnaire (PSWQ) were administered to a subsample of 304 students, and the PI‐WSUR (Padua Inventory Washington State University Revision), the PSWQ and the Multidimensional Perfectionism Scale (MPS) to another subsample of 212 students. Also, 89 students filled in the OCI‐R twice with two weeks in between. The factor structure of the instrument was replicated in a confirmatory factor analysis. Cronbach's alpha and test‐retest reliabilities of the OCI‐R total scale and all subscales were satisfactory. Further, the OCI‐R total score showed a significantly higher correlation with the PI‐WSUR and the MOCI than with the PSWQ or the MPS. Finally, conceptually similar scales of the OCI‐R and the MOCI as well as the PI‐WSUR showed higher inter‐correlations than the correlations that were observed between conceptually more distinct scales. It is concluded that the Icelandic version of the OCI‐R has strong psychometric properties in a student population.