Obsessive Compulsive Inventory - Revised (OCI-R)
What is it?
The OCI-R (Obsessive Compulsive Inventory - Revised) is a self-report questionnaire designed to assess symptoms related to Obsessive-Compulsive Disorder (OCD). OCD is characterized by persistent, intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions) that a person feels driven to perform. The OCI-R helps identify specific areas where someone might be struggling with obsessive-compulsive symptoms, making it easier for clinicians to understand the nature of their distress.
The OCI-R is a revised, shorter version of the original Obsessive Compulsive Inventory, designed to be quicker and more efficient while still capturing the essential features of OCD.
How is it used?
The OCI-R is suitable for adults and adolescents aged 18 and older. It usually takes about 5-10 minutes to complete. The questions ask about the frequency and severity of various OCD-related thoughts and behaviors over the past month. This makes it a useful tool for both screening and tracking symptoms over time.
The OCI-R can be used in clinical settings, during therapy sessions, or even for self-assessment. It’s often used to help clinicians get a better understanding of a person’s OCD symptoms, guide treatment planning, and monitor progress throughout therapy.
What do the scores mean?
The OCI-R consists of 18 questions, with each item rated on a scale from 0 (not at all) to 4 (extremely). The questions are grouped into six symptom categories:
- Washing: Excessive washing or cleaning behaviors.
- Checking: Repeatedly checking things, like locks or appliances.
- Ordering: The need for symmetry or arranging things in a specific way.
- Obsessing: Distressing, intrusive thoughts or worries.
- Hoarding: Difficulty discarding items, even if they have little value.
- Neutralising: Mental rituals or actions to counteract intrusive thoughts.
The scores for each category are summed to provide subscale scores, and the total score (ranging from 0 to 72) reflects the overall severity of OCD symptoms. Higher scores indicate more severe symptoms.
Here’s how to interpret the total score:
- 0 to 21: Low levels of OCD symptoms. The person may have mild tendencies but is unlikely to have significant distress or impairment.
- 22 to 42: Moderate symptoms. The individual may experience distressing thoughts or behaviors that interfere with their daily life to some extent.
- 43 and above: High levels of OCD symptoms. This suggests significant distress and impairment, indicating that clinical support may be beneficial.
It’s also helpful to look at the subscale scores to identify which specific areas (e.g., checking, washing, hoarding) are causing the most distress. This can guide targeted interventions, allowing therapy to focus on the symptoms that are most troubling.
What does the research say?
The OCI-R is backed by extensive research and is widely used in both clinical practice and research settings. It has been shown to have strong reliability (consistent results over time) and validity (accurately measuring OCD symptoms). The revised, shorter format makes it a practical tool for clinicians and individuals alike, without sacrificing accuracy.
One of the strengths of the OCI-R is its ability to identify not just the presence of OCD symptoms but also their severity. This makes it a useful tool for tracking progress in therapy, as it can show how symptoms change over time in response to treatment.
Developer:
Foa, E.B., Kozak, M.J., Salkovskis, P.M., Coles, M.E. & Amir, N. (1998) The validation of a new obsessive compulsive disorder scale: The Obsessive Compulsive Inventory (OCI) Psychological Assessment Vol. 10 206-214.