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Related Experiment Videos

Predicting personality disorder traits with the Defense Style Questionnaire in a normal sample.

B K Sinha1, D C Watson

  • 1Department of Psychology, University of Alberta, Edmonton, Canada.

Journal of Personality Disorders
|September 25, 1999
PubMed
Summary

This study found that defense styles significantly predict personality disorders, with immature styles linking to maladaptive traits and mature styles to healthier functioning. However, specific disorders could not be precisely predicted by defense styles alone.

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Area of Science:

  • Psychology
  • Psychopathology
  • Personality Assessment

Background:

  • Defense mechanisms are psychological strategies used to cope with reality and maintain self-image.
  • The Defense Style Questionnaire (DSQ-40) assesses mature, neurotic, and immature defense styles.
  • Understanding the relationship between defense styles and personality disorders is crucial for clinical assessment.

Purpose of the Study:

  • To evaluate the predictive efficacy of the DSQ-40 in relation to DSM-III-R personality disorders.
  • To investigate the association between mature, neurotic, and immature defense styles and various personality disorders.
  • To determine the extent to which defense styles explain variance in personality disorder measures.

Main Methods:

  • Utilized the 40-item Defense Style Questionnaire (DSQ-40) for defense style assessment.

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  • Employed the Coolidge Axis II Inventory, Millon Clinical Multiaxial Inventory-II, and MMPI personality disorder scales to diagnose 11 personality disorders.
  • Analyzed data from a nonclinical sample using multiple regression.

    • Main Results:

    • Most personality disorders showed a positive association with immature defense styles and a negative association with mature defense styles.
    • Defense styles accounted for a significant portion of the variance in personality disorder measures, ranging from 2% to 42%.
    • Specific personality disorders could not be reliably predicted by defense styles across all measures.

    Conclusions:

    • Defense styles are broadly associated with personality disorder pathology, with immature styles linked to poorer outcomes.
    • While defense styles offer predictive value for general personality disorder traits, they lack specificity for individual disorder prediction.
    • Further research may explore nuanced relationships and clinical utility of defense style assessment in personality disorders.