Factor Structure and Validation of the Obsessive Compulsive Inventory-Revised (OCI-R) in a Greek Non-Clinical Sample

This study assessed and validated a Greek version of the Obsessive-Compulsive Inventory-Revised (OCI-R) in a large community sample. A total of 1379 Greek adults, including university students and individuals from the community, participated. Overall, the Greek OCI-R supported the six-factor solution, namely checking, ordering, obsessing, hoarding, washing and neutralizing, which was suggested by the original scale development and was later confirmed in other cultural settings. OCI-R was found to have very good to excellent psychometric properties as demonstrated by the application of traditional and alternative validating methods. Further, a five-factor structure that excluded the hoarding scale provided a slightly better conceptual fit of the data. In light of new recommendations, the Greek version of OCI-R provides compelling evidence of its efficacy to clearly differentiate between high- and low self-reports of OCD symptoms. We discuss that scores from the Greek community sample were commensurate with those observed in clinical samples.