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Psychiatry Res. 1993 Sep;48(3):243-55.

A family study of self-reported personality traits and DSM-III-R personality disorders.

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  • 1Department of Epidemiology, Harvard School of Public Health.


Personality traits and DSM-III-R personality disorders of first-degree relatives of patients with psychoses were studied using the NEO Five-Factor Inventory (NEO-FFI) and the Personality Diagnostic Questionnaire-Revised (PDQ-R), two self-report instruments. The relatives were compared on their scores for the five personality factors in the NEO-FFI, the prevalence of individual DSM-III-R personality disorders, and their scores for each personality disorder scale in the PDQ-R. The results suggest that there is no difference in personality traits and prevalence of personality disorders, including schizophrenia spectrum disorders, when relatives of patients with schizophrenia, bipolar disorder, and major depression are compared to each other. Relatives of patients with "atypical psychosis," psychotic disorders that do not meet DSM-III-R criteria for any specific nonorganic psychotic disorder, may be a distinctive group.

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