An investigation of schizotypy in injecting amphetamine users

Dawe, Sharon, Gullo, Matthew J., Minge, Sam, McKetin, Rebecca, Hides, Leanne, Kavanagh, David J., & Young, Ross McD. (2013) An investigation of schizotypy in injecting amphetamine users. Personality and Individual Differences, 55(5), pp. 508-514.

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A fully dimensional view of psychiatric disorder conceptualises schizotypy as both a continuous personality trait and an underlying vulnerability to the development of psychotic illness. Such a model would predict that the structure of schizotypal traits would closely parallel the structure of schizophrenia or psychosis. This was investigated in injecting amphetamine users (N = 322), a clinical population who have high rates of acute psychotic episodes and subclinical schizotypal experiences. Schizotypy was assessed using the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE), and psychotic symptoms were assessed using the Brief Psychiatric Rating Scale (BPRS). Using confirmatory factor analysis, O-LIFE subscale scores were mapped onto latent variables with their more clinical counterparts from the BPRS. A four-factor model comprising positive schizotypy, disorganisation, negative schizotypy, and disinhibition provided the best model fit, consistent with prior research into the structure of schizotypy. The model provided a good fit to the data, lending support to the theory that schizotypy and psychotic symptoms map onto common underlying dimensions.

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ID Code: 67308
Item Type: Journal Article
Refereed: Yes
Keywords: Schizotypy; Personality; Amphetamine; O-LIFE; Psychosis
DOI: 10.1016/j.paid.2013.04.024
ISSN: 0191-8869
Subjects: Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2013 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in Personality and Individual Differences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Personality and Individual Differences, [VOL 55, ISSUE 5, (2013)] DOI: 10.1016/j.paid.2013.04.024
Deposited On: 12 Feb 2014 06:04
Last Modified: 03 Oct 2015 11:35

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