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Classification of personality disorder.

P Tyrer, J Alexander

    The British Journal of Psychiatry : the Journal of Mental Science
    |August 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    This study on psychiatric patients suggests personality disorders may differ in degree, not kind, from other mental health conditions. Findings support simplifying current personality disorder classifications.

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    Area of Science:

    • Psychiatry and Psychology
    • Clinical Psychology
    • Behavioral Science

    Background:

    • Personality disorders are a significant area of clinical concern.
    • Current diagnostic classifications may require refinement based on empirical data.

    Purpose of the Study:

    • To investigate the structural similarities of personality traits in patients with and without a primary diagnosis of personality disorder.
    • To explore discrete categories of personality using cluster analysis.
    • To evaluate the current classification system for personality disorders.

    Main Methods:

    • An interview schedule was employed to gather personality trait data from 130 psychiatric patients.
    • Patients were divided into two groups: 65 with primary personality disorder diagnoses and 65 with other diagnoses.

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  • Factor analysis and three types of cluster analysis were utilized for data analysis.

    • Main Results:

    • Factor analysis revealed comparable personality variable structures across both patient groups.
    • This indicates personality disorders may represent a quantitative difference from other psychiatric conditions.
    • Cluster analysis identified five distinct categories: sociopathic, passive-dependent, anankastic, schizoid, and a non-personality-disordered group. Notably, 63% of personality-disordered patients fell into the passive-dependent or sociopathic categories.

    Conclusions:

    • The findings suggest that personality disorders are not fundamentally different from the personalities of other psychiatric patients, but rather differ in degree.
    • The current classification of personality disorders could be simplified based on these empirical results.
    • Further research into these identified clusters may refine diagnostic and treatment approaches.