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Related Experiment Videos

Development of a depersonalization severity scale.

D Simeon1, O Guralnik, J Schmeidler

  • 1Department of Psychiatry, Mount Sinai School of Medicine, New York, New York, USA. daphne.simeon@mssm.edu

Journal of Traumatic Stress
|July 27, 2001
PubMed
Summary
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The new 6-item Depersonalization Severity Scale (DSS) effectively measures depersonalization in clinical trials. This clinician-rated scale shows excellent reliability and sensitivity to treatment changes in patients with Depersonalization Disorder.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • Depersonalization Disorder requires reliable assessment tools for clinical trials.
  • Existing measures may not fully capture depersonalization severity.
  • Need for a clinician-rated scale for treatment evaluation.

Purpose of the Study:

  • To develop and validate the 6-item Depersonalization Severity Scale (DSS).
  • To assess the DSS's psychometric properties in patients with Depersonalization Disorder.
  • To evaluate the DSS's sensitivity to treatment change.

Main Methods:

  • The 6-item DSS was administered to 63 participants diagnosed with DSM-IV Depersonalization Disorder.
  • Psychometric properties including reliability and validity were examined.

Related Experiment Videos

  • Sensitivity to treatment change was assessed in blinded, controlled settings, comparing DSS and DES.

    • Main Results:

    • The DSS demonstrated excellent interrater reliability and moderate internal consistency.
    • The scale exhibited high convergent and discriminant validity.
    • Both the DSS and the Dissociative Experiences Scale (DES) were sensitive to treatment change.

    Conclusions:

    • The Depersonalization Severity Scale (DSS) is a reliable and valid clinician-rated measure.
    • The DSS is sensitive to treatment changes in Depersonalization Disorder.
    • The DSS is recommended for piloting in future treatment trials for trauma-spectrum disorders.