Revisiting the blurry boundaries of schizophrenia: Spectrum disorders in psychometrically identified schizotypes

Abstract Certain Personality Disorders (PDs) have been found to be present in the prodromal phase of schizophrenia at a higher rate than other personality disorders. Although schizotypal, paranoid, and schizoid PDs are traditionally viewed as spectra for schizophrenia, research suggests that avoidan...

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Bibliographic Details
Published in:Psychiatry research 2015-02, Vol.225 (3), p.335-340
Main Authors: Bolinskey, P. Kevin, James, Alison V, Cooper-Bolinskey, Dianna, Novi, Jonathan H, Hunter, Helen K, Hudak, Daniel V, Schuder, Kelly M, Myers, Kevin R, Iati, Carina A, Lenzenweger, Mark F
Format: Article
Language:English
Subjects:
Adolescent
Adult
Chapman Psychosis Proneness Scales
Comorbidity
Diagnostic and Statistical Manual of Mental Disorders
Female
Humans
Male
Personality Disorder Interview for DSM-IV
Personality disorders
Personality Disorders - diagnosis
Personality Disorders - epidemiology
Prevalence
Psychiatry
Psychometrics
Schizophrenia
Schizophrenia - classification
Schizophrenia - epidemiology
Schizotypy
Symptom Assessment
Young Adult
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Summary:Abstract Certain Personality Disorders (PDs) have been found to be present in the prodromal phase of schizophrenia at a higher rate than other personality disorders. Although schizotypal, paranoid, and schizoid PDs are traditionally viewed as spectra for schizophrenia, research suggests that avoidant PD should be included in this group (e.g., Fogelson et al., 2007 ). The present study examines whether a sample of psychometrically identified schizotypes (SZT) have higher incidence of schizophrenia-spectrum PDs, as well as more symptoms of these PDs, in general, than does a matched comparison (MC) sample. Eighty-five SZT and 78 MC participants were administered the Personality Disorder Interview for DSM-IV (PDI-IV) to assess PD symptoms and diagnoses. Results indicate that the SZT group evidenced significantly more symptoms of avoidant, schizoid, paranoid, and schizotypal PDs than did the MC group. Further, there were significant differences in the incidence of these PDs between the groups.
ISSN:0165-1781
1872-7123
DOI:10.1016/j.psychres.2014.12.015