OCI-R: Scoring and Interpretation Guide
A clinician's guide to scoring and interpreting the Obsessive-Compulsive Inventory-Revised (OCI-R), Foa and colleagues' 18-item measure of OCD symptom distress. Covers the six subscales, the published cut-off, the hoarding caveat, and how to use the profile to plan and track exposure and response prevention.
About this resource
The OCI-R was published in 2002 by Edna Foa and colleagues as a shortened version of the 42-item Obsessive-Compulsive Inventory. It asks how much the person has been distressed or bothered over the past month by 18 experiences, three for each of six symptom areas: washing, checking, ordering, obsessing, hoarding and mental neutralising. Its brevity, the subscale structure and its free availability have made it one of the most widely used self-report measures of OCD symptoms in research and clinical practice.
This resource is a scoring and interpretation guide. The OCI-R is copyrighted by its authors and is free for clinical use, but we do not reproduce the items; obtain the official version. The guide describes the response format, the scoring, the total-score cut-off of 21 proposed by Foa and colleagues (2002) for distinguishing OCD from non-anxious controls, the subscale ranges, and an important caveat: the hoarding subscale measures a problem that DSM-5 now classifies as a separate disorder, so a high hoarding score with low scores elsewhere should not be read as OCD.
For clinicians delivering exposure and response prevention, the OCI-R subscale profile is a shortcut to the formulation. It tells you which symptom dimensions carry the distress, which is where hierarchy building starts, and repeating it every few sessions shows whether the work is reaching the right target. It does not, however, capture the content of obsessions in detail, and it does not measure the time consumed or the degree of insight, which the clinician-rated Y-BOCS covers.
How to use it
- Obtain the official OCI-R. Give it at assessment alongside a clinical interview about the person's obsessions, compulsions and avoidance.
- Add all 18 items for the total (0 to 72), and add the three items in each subscale for six subscale scores (0 to 12 each). The official form identifies which items belong to which subscale.
- Compare the total to the cut-off of 21. A score at or above 21 is consistent with OCD; lower scores do not exclude it, particularly where the person's main symptoms are not well represented by the 18 items (for example, harm or sexual obsessions with covert rituals).
- Read the subscale profile. If hoarding is the only elevated subscale, assess for hoarding disorder rather than OCD. Otherwise use the elevated subscales as the starting point for the exposure hierarchy.
- Repeat the OCI-R every four to six sessions. Discuss the trajectory with the client and use a flat score as a prompt to check that exposures are targeting the feared outcome and that response prevention is being held.
References
- Foa, E. B., Huppert, J. D., Leiberg, S., Langner, R., Kichic, R., Hajcak, G., & Salkovskis, P. M. (2002). The Obsessive-Compulsive Inventory: Development and validation of a short version. Psychological Assessment, 14(4), 485-496.
- Abramowitz, J. S., & Deacon, B. J. (2006). Psychometric properties and construct validity of the Obsessive-Compulsive Inventory-Revised: Replication and extension with a clinical sample. Journal of Anxiety Disorders, 20(8), 1016-1035.
- Abramowitz, J. S., Deacon, B. J., & Whiteside, S. P. H. (2019). Exposure therapy for anxiety: Principles and practice (2nd ed.). Guilford Press.
