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Related Experiment Videos

The Yale-Brown Obsessive Compulsive Scale: factor analysis, construct validity, and suggestions for refinement.

Brett J Deacon1, Jonathan S Abramowitz

  • 1Department of Psychiatry & Psychology, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA.

Journal of Anxiety Disorders
|March 8, 2005
PubMed
Summary
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The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) may need scoring revisions. A new two-factor model suggests symptom severity is distinct from resistance and control in obsessive-compulsive disorder (OCD) assessment.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) is the standard for measuring obsessive-compulsive disorder (OCD) symptom severity.
  • Existing research has raised questions about the Y-BOCS's psychometric properties and subscale validity.

Purpose of the Study:

  • To investigate the factor structure of the Y-BOCS.
  • To determine if obsessional and compulsive symptoms independently contribute to overall OCD severity.
  • To assess the construct validity of Y-BOCS subscales against other OCD measures.

Main Methods:

  • Confirmatory and exploratory factor analyses were conducted on data from 100 patients diagnosed with OCD.
  • The study examined the relationship between Y-BOCS subscales and other OCD assessment tools.

Related Experiment Videos

Main Results:

  • Confirmatory factor analyses did not replicate previous Y-BOCS factor models.
  • Exploratory factor analysis revealed a two-factor structure: symptom severity (time, distress, interference) and resistance/control.
  • The Severity Subscale showed strong psychometric properties and construct validity, unlike the Resistance/Control Subscale.

Conclusions:

  • The findings suggest a revised scoring approach for the Y-BOCS may be warranted.
  • The Severity Subscale appears to be a more robust measure of OCD symptom impact.
  • Further research is needed to validate the proposed two-factor structure and scoring revisions.