Description

The Padua Inventory – Washington State University Revision (PI-WSUR) is a revised version of the original Padua Inventory, designed to measure obsessive-compulsive symptoms. The PI-WSUR was developed at Washington State University to improve the reliability and validity of the original questionnaire, providing a detailed assessment of OCD symptoms.

Objective

The main goal of the PI-WSUR is to evaluate the various dimensions of obsessive-compulsive symptoms in individuals. It is used both in clinical practice for the diagnosis and monitoring of OCD, as well as in research for a better understanding of symptoms and the underlying factors of the disorder.

Analysis

The PI-WSUR includes 39 statements that cover five main dimensions of obsessive-compulsive symptoms:
Intrusive thoughts: Unwanted and distressing thoughts that invade the mind.
Contamination worry: Fears and concerns about dirt and contamination.
Checking: Repetitive checks to ensure that actions have been correctly performed.
Impulses: The urge to carry out inappropriate or paradoxical acts.
Relentless doubt: Persistent doubt about the correctness of one’s actions and thoughts.
Participants are asked to respond to each statement using a Likert scale from 0 (never) to 4 (always), indicating the frequency and severity of their symptoms.

Scoring

The total PI-WSUR score is calculated by summing the scores of the individual statements. The overall score can range from 0 to 156, with higher scores indicating greater severity of obsessive-compulsive symptoms. Subscale scores provide additional information about specific dimensions of OCD.

References

Burns, G. L., Keortge, S. G., Formea, G. M., & Sternberger, L. G. (1996). Revision of the Padua Inventory of obsessive compulsive disorder symptoms: Distinctions between worry, obsessions, and compulsions. Behaviour Research and Therapy, 34(2), 163-173.
Sanavio, E. (1988). Obsessions and compulsions: The Padua Inventory. Behaviour Research and Therapy, 26(2), 169-177.
Van Oppen, P., Hoekstra, R. J., & Emmelkamp, P. M. G. (1995). The structure of obsessive-compulsive symptoms. Behaviour Research and Therapy, 33(1), 15-23.
Sternberger, L. G., & Burns, G. L. (1990). Maudsley Obsessive Compulsive Inventory: Obsessive compulsive subscale structure. Behaviour Research and Therapy, 28(4), 337-340.
Burns, G. L., Formea, G. M., Keortge, S. G., & Sternberger, L. G. (1995). The utilization of nonpatient samples in the study of obsessive compulsive disorder. Behaviour Research and Therapy, 33(2), 133-144.