Yale-Brown Obsessive Compulsive Scale.

Y-BOCS

What it measures

Obsessive-compulsive disorder severity, independent of symptom content; obsession + compulsion severity (time, interference, distress, resistance, control) + symptom checklist

Length and format

10 severity items (+ a separate symptom checklist). Each item 0-4, clinician-rated; obsession (0-20) + compulsion (0-20) = total 0-40; severity bands (clinician-rated/interview)

Language versions

Many languages worldwide incl. ES, FR, DE, IT, PT, ZH, JA, AR; broadly validated

Normative data

Normative data for this instrument is held in our reference library. The per-population breakdown is not published here.

Licence

open with attribution

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Goodman, W. K., Price, L. H., Rasmussen, S. A., et al. (1989). The Yale-Brown Obsessive Compulsive Scale: Development, use, and reliability. Archives of General Psychiatry, 46(11), 1006-1011.