Journal
INTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH
Volume 16, Issue -, Pages S34-S40Publisher
WHURR PUBLISHERS LTD
DOI: 10.1002/mpr.214
Keywords
psychosis; schizophrenia; bipolar affective disorder; dimensions; psychosis continuum; psychosis phenotype
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In this paper, we discuss the conceptual background for including a dimensional component to the DSM V diagnoses for psychoses. We review the evidence for a continuous distribution of psychosis like symptoms in the general population and summarise the research validating the clinical usefulness of psychopathological dimensions. We conclude that diagnostic models using both categorical and dimensional representations of psychosis have better predictive validity than either model independently. Dimensions do not appear to be diagnosis specific so a flexible scoring of dimensions across all psychotic and major affective disorders may be potentially more informative than a system where categorical diagnoses are kept artificially dimension-specific. Copyright: (c) 2007 John Wiley & Sons, Ltd.
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