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9a - Conceptual and Methodological Reflections on Schizotypy, Schizotypic Psychopathology, Cluster A Disorders, and Schizophrenia: Commentary on Cluster A Personality Disorders

from Part III - Individual Disorders and Clusters

Published online by Cambridge University Press:  24 February 2020

By
Mark F. Lenzenweger
Edited by
Carl W. Lejuez  and
Kim L. Gratz
Carl W. Lejuez
Affiliation:
University of Kansas
Kim L. Gratz
Affiliation:
University of Toledo, Ohio
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Summary

The DSM-5 Cluster A personality disorders (schizotypal, paranoid, schizoid) review is placed within a broader theoretical framework, namely the schizotypy framework. Schizotypy is conjectured to represent the latent liability for schizophrenia and can manifest itself in a variety of expressions ranging from overt clinical schizophrenia, through alternative manifestations (e.g., schizotypal personality), on to deviance on laboratory tasks that validly tap schizotypy influenced endophenotypes. Discussion focuses on enhancing clarity and conceptualization in this rich area of experimental and clinical psychopathology. That schizotypal personality disorder and schizotypy are not fungible concepts is reviewed. Other points of discussion emphasize that (a) dimensional conceptualization and/or measurement does not imply continuity or a quantitative nature in the underlying construct; (b) schizotypy is not a component of normal personality, rather it is a construct intimately related to the illness schizophrenia; and (c) the low conversion rates observed in all prodromal schizophrenia studies can be placed in perspective using the schizotypy model.

Keywords

schizotypal personalityschizotypyschizophreniaclinical high-riskendophenotypes
Type
Chapter
Information
The Cambridge Handbook of Personality Disorders , pp. 212 - 216
Publisher: Cambridge University Press
Print publication year: 2020

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