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Related Experiment Videos

The Overvalued Ideas Scale: development, reliability and validity in obsessive-compulsive disorder.

F Neziroglu1, D McKay, J A Yaryura-Tobias

  • 1Institute for Bio-Behavioral Therapy and Research, Department of BioPsychoSocial Research, Great Neck, NY 11021, USA.

Behaviour Research and Therapy
|August 24, 1999
PubMed
Summary
This summary is machine-generated.

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The Overvalued Ideas Scale (OVIS) reliably measures overvalued ideas in obsessive-compulsive disorder (OCD). This new scale shows good validity and may predict treatment outcomes for OCD patients.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • Overvalued ideas in obsessive-compulsive disorder (OCD) are linked to poorer treatment outcomes.
  • No quantitative measures currently exist to assess overvalued ideas in OCD patients.

Purpose of the Study:

  • To examine the psychometric properties of the Overvalued Ideas Scale (OVIS).
  • To assess the reliability and validity of the OVIS in a clinical population with OCD.

Main Methods:

  • Two studies were conducted with patients diagnosed with OCD.
  • Participants completed the OVIS along with other measures of psychopathology.
  • Psychometric properties including internal consistency, test-retest, interrater reliability, convergent, and discriminant validity were evaluated.

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Main Results:

  • The OVIS demonstrated adequate internal consistency (alpha = 0.88), test-retest reliability (r = 0.86), and interrater reliability (r = 0.88).
  • Convergent validity was moderate to high with measures of OCD symptoms and psychotic symptoms.
  • Discriminant validity with anxiety and depression measures was moderate.

Conclusions:

  • The OVIS is a reliable and valid measure for assessing overvalued ideas in OCD.
  • Overvalued ideas appear stable in individuals with high scores.
  • Further research with the OVIS may be valuable for predicting OCD treatment outcomes.