Title

The Relationship Between Interview-Based Schizotypal Personality Dimension Scores And The Continuous Performance Test

Keywords

Attention; Continuous performance test; Endophenotype; Schizophrenia; Schizotypal personality; Structured interview

Abstract

The existing research that has examined cognitive performance in samples with subclinical schizotypal personality features has been largely limited to psychometric self-report questionnaires, which may be biased by distorted self-awareness of symptoms. The present study examined the relationship between performance on a degraded-AX continuous performance test (CPT) and continuous dimension scores created from a structured clinical interview for schizotypal personality disorder (SPD), which reflected both the breadth and severity of schizotypal personality symptoms, in 52 undergraduate students. Only one participant met full diagnostic criteria for SPD. The overall dimension score from the SPD clinical interview showed a positive correlation with both omission (rs = .47) and false alarm (rs = .41) errors on the CPT. Interpersonal symptoms were positively correlated with omission errors (rs = .47), while Disorganized symptoms were positively correlated with false alarm errors (rs = .40). Results suggest that higher SPD interview-based dimension scores are associated with lower levels of performance on the CPT, even when examining a relatively subclinical sample of young adults. In contrast, scores from the psychometric Abbreviated Schizotypal Personality Questionnaire in the same sample did not correlate with accuracy measures on the CPT, suggesting that the interview-based measure of schizotypal personality may have a stronger relationship with CPT accuracy. Findings also add to a growing literature suggesting that Interpersonal SPD symptoms are primarily related to omission errors, while Disorganized SPD symptoms are primarily related to false alarm errors. © 2008 Elsevier B.V. All rights reserved.

Publication Date

3-1-2009

Publication Title

Schizophrenia Research

Volume

108

Issue

1-3

Number of Pages

158-162

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.schres.2008.11.020

Socpus ID

60249089096 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/60249089096

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