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    An investigation of schizotypy in injecting amphetamine users

    Access Status
    Fulltext not available
    Authors
    Dawe, S.
    Gullo, M.
    Minge, S.
    McKetin, Rebecca
    Hides, L.
    Kavanagh, D.
    Young, R.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Dawe, S. and Gullo, M. and Minge, S. and McKetin, R. and Hides, L. and Kavanagh, D. and Young, R. 2013. An investigation of schizotypy in injecting amphetamine users. Personality and Individual Differences. 55 (5): pp. 508-514.
    Source Title
    Personality and Individual Differences
    DOI
    10.1016/j.paid.2013.04.024
    ISSN
    0191-8869
    School
    National Drug Research Institute (NDRI)
    URI
    http://hdl.handle.net/20.500.11937/56880
    Collection
    • Curtin Research Publications
    Abstract

    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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