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Related Experiment Videos

Yale-Brown Obsessive Compulsive Scale: the dimensional structure revisited.

Eric A Storch1, Nathan Andrew Shapira, Eleni Dimoulas

  • 1Department of Pediatrics, University of Florida, Gainesville, Florida 32610, USA. estorch@psychiatry.ufl.edu

Depression and Anxiety
|September 1, 2005
PubMed
Summary

This study confirms the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) has two main factors: obsessions and compulsions. These factors show good reliability and validity for assessing obsessive-compulsive disorder (OCD).

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • The factor structure of the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) lacks consistent findings across studies.
  • Previous research has not established a stable factor solution for the Y-BOCS.

Purpose of the Study:

  • To test the fit of previously reported factor structures for the Y-BOCS.
  • To validate the factor structure of the Y-BOCS in adults with obsessive-compulsive disorder (OCD).

Main Methods:

  • Confirmatory factor analyses were performed on Y-BOCS data from 131 adults with OCD.
  • Participants also completed self-report measures for depression and OCD symptoms.
  • A global impairment index was used for rating severity.

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Main Results:

  • The originally proposed two-factor structure (obsession and compulsion) was supported by confirmatory factor analyses.
  • Reliability and convergent validity of the obsession and compulsion factors were generally satisfactory.
  • Divergent validity of the factors was not fully supported.

Conclusions:

  • The findings support the two-factor structure of the Y-BOCS for assessing OCD.
  • The study discusses implications for scoring the Y-BOCS based on its validated factor structure.
  • Further research may be needed to fully establish divergent validity.