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Development, reliability, and validity of a dissociation scale.

E M Bernstein, F W Putnam

    The Journal of Nervous and Mental Disease
    |December 1, 1986
    PubMed
    Summary
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    The Dissociative Experiences Scale (DES) reliably measures dissociation in various populations. This 28-item scale demonstrates good reliability and validity for assessing dissociative experiences.

    Area of Science:

    • Psychology
    • Psychiatry

    Background:

    • Dissociation involves a lack of integration in consciousness and memory.
    • It occurs in normal individuals and is more prevalent in mental illnesses.
    • A reliable measure for dissociation was needed.

    Purpose of the Study:

    • To develop and validate the Dissociative Experiences Scale (DES).
    • To measure dissociation in both normal and clinical populations.

    Main Methods:

    • Developed a 28-item self-report questionnaire (DES).
    • Collected demographic data alongside scale scores.
    • Administered the DES to diverse populations including normal adults, students, and patients with various disorders.

    Main Results:

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  • The DES demonstrated good test-retest and split-half reliability.
  • Internal consistency and construct validity were supported by item-scale correlations.
  • Criterion-referenced validity was evidenced by significant differences between populations.

    • Conclusions:

    • The Dissociative Experiences Scale (DES) is a reliable and valid instrument.
    • It can effectively measure dissociative experiences across different groups.
    • The scale aids in understanding dissociation in psychological and psychiatric contexts.