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Florida Obsessive-Compulsive Inventory: development, reliability, and validity.

Eric A Storch1, David A S Kaufman, Daniel Bagner

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

Journal of Clinical Psychology
|August 4, 2007
PubMed
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The Florida Obsessive-Compulsive Inventory (FOCI) offers a quick assessment for obsessive-compulsive disorder (OCD) symptoms. Its Severity Scale demonstrates strong validity, correlating well with established measures for OCD severity.

Area of Science:

  • Psychological Assessment
  • Clinical Psychology
  • Psychopathology

Background:

  • Obsessive-compulsive disorder (OCD) requires reliable assessment tools.
  • Existing measures may not offer a rapid evaluation of both symptom presence and severity.

Purpose of the Study:

  • To investigate the psychometric properties of the Florida Obsessive-Compulsive Inventory (FOCI).
  • To evaluate the concurrent validity and reliability of the FOCI's Symptom Checklist and Severity Scale in an OCD patient sample.

Main Methods:

  • The FOCI was administered to 113 patients diagnosed with OCD.
  • Internal consistency (Cronbach's alpha) and reliability (Kuder-Richardson 20) were calculated.
  • Correlations were computed between FOCI scales and the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), depression, and psychopathology measures.

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Main Results:

  • The FOCI Severity Scale showed high internal consistency (alpha = .89) and strong correlation with Y-BOCS total scores.
  • FOCI Severity Scale correlations with depression and psychopathology measures mirrored those of the Y-BOCS.
  • The FOCI Symptom Checklist demonstrated adequate reliability (K-R 20 = .83) with moderate correlations to other measures.

Conclusions:

  • The FOCI Severity Scale exhibits concurrent validity for assessing OCD symptom severity.
  • The FOCI provides a rapid method for evaluating the presence and severity of OCD symptoms.
  • A limitation is the FOCI's inability to assess individual symptom severity.