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Related Experiment Videos

Justification for separating schizotypal and borderline personality disorders.

R L Spitzer, J Endicott

    Schizophrenia Bulletin
    |January 1, 1979
    PubMed
    Summary

    The separation of Schizotypal Personality Disorder from Borderline Personality Disorder in DSM-III allows for better study of genetic and environmental factors in personality disorders. This distinction aids researchers in differentiating distinct phenomena previously grouped under "borderline".

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    Area of Science:

    • Psychiatry
    • Psychology
    • Genetics

    Background:

    • The classification of personality disorders has historically grouped distinct conditions under broad labels.
    • The separation of Schizotypal Personality Disorder (SPD) from Borderline Personality Disorder (BPD) in the Diagnostic and Statistical Manual of Mental Disorders, third edition (DSM-III) has been a subject of debate.
    • Previous classifications lacked the granularity to study the interplay of genetic and environmental influences on distinct personality dimensions.

    Purpose of the Study:

    • To evaluate the justification for separating Schizotypal Personality Disorder from Borderline Personality Disorder in DSM-III.
    • To highlight the utility of this diagnostic separation for future research into personality and psychiatric disorders.
    • To provide proposed diagnostic criteria for both Schizotypal Personality Disorder and Borderline Personality Disorder.

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    Main Methods:

    • Review of the rationale behind the DSM-III decision to separate SPD and BPD.
    • Analysis of the behavioral characteristics differentiating the two dimensions previously termed "borderline."
    • Presentation of proposed diagnostic criteria for SPD and BPD.

    Main Results:

    • The separation of SPD and BPD in DSM-III was based on behavioral independence, not genetic evidence.
    • This diagnostic distinction has already facilitated clearer research communication, with investigators now using separate terms for distinct phenomena.
    • The separation provides a framework for studying the interaction of genetic and environmental factors in personality and psychiatric disorders.

    Conclusions:

    • The separation of Schizotypal Personality Disorder and Borderline Personality Disorder in DSM-III is a valuable advancement for psychiatric research.
    • This distinction enables more precise investigation into the etiology of personality disorders, considering both genetic and environmental influences.
    • The proposed diagnostic criteria offer a foundation for consistent and focused research on these specific personality disorders.