Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach

Rössler, Wulf; Ajdacic-Gross, Vladeta; Müller, Mario; Rodgers, Stephanie; Haker, Helene; Hengartner, Michael Pascal

doi:10.1016/j.schres.2014.11.033

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach
Authors:	Rössler, Wulf Ajdacic-Gross, Vladeta Müller, Mario Rodgers, Stephanie Haker, Helene Hengartner, Michael Pascal
DOI:	10.1016/j.schres.2014.11.033
Published in:	Schizophrenia Research
Volume(Issue):	161
Issue:	2-3
Page(s):	194
Pages to:	201
Issue Date:	Feb-2015
Publisher / Ed. Institution:	Elsevier
ISSN:	0920-9964 1573-2509
Language:	English
Subjects:	Sub-clinical psychosis; Psychotic-like experiences; Proneness to psychosis; Schizotypy; Epidemiology; Community sample; Risk factors
Subject (DDC):	616.89: Mental disorders, clinical psychology and psychiatry
Abstract:	Several studies have demonstrated that expression of a psychosis phenotype can be observed below the threshold of its clinical detection. To date, however, no conceptual certainty has been reported for the validity and reliability of sub-clinical psychosis. Our main objectives were to assess the prevalence rates and severity of various psychosis symptoms in a representative community sample. Furthermore, we wanted to analyze which latent factors are depicted by several currently used psychosis questionnaires. We also examined how those latent factors for sub-clinical psychosis are linked to psychosocial factors, normal personality traits, and coping abilities related to chronic stress. Most of the eight subscales from the Paranoia Checklist and the Structured Interview for Assessing Perceptual Anomalies had a very similar type of distribution, i.e., an inverse Gaussian (Wald) distribution. This supported the notion of a continuity of psychotic symptoms, which we would expect to find for continuously distributed symptoms within the general population. Sub-clinical psychosis can be reduced to two different factors – one representing odd beliefs about the world and odd behavior, and the other one representing anomalous perceptions (such as hallucinations). Persons with odd beliefs and behavior are under greater burden and more susceptible to psychosocial risks than are persons with anomalous perceptions. These sub-clinical psychosis syndromes are also related to stable personality traits. In conclusion, we obtained strong support for the notion that there is no natural cut-off separating psychotic illness from good health. Sub-clinical psychosis of any kind is not trivial because it is associated with various types of social disability.
URI:	https://digitalcollection.zhaw.ch/handle/11475/2291
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	Applied Psychology
Organisational Unit:	Psychological Institute (PI)
Appears in collections:	Publikationen Angewandte Psychologie

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Rössler, W., Ajdacic-Gross, V., Müller, M., Rodgers, S., Haker, H., & Hengartner, M. P. (2015). Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach. Schizophrenia Research, 161(2-3), 194–201. https://doi.org/10.1016/j.schres.2014.11.033

Rössler, W. et al. (2015) ‘Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach’, Schizophrenia Research, 161(2-3), pp. 194–201. Available at: https://doi.org/10.1016/j.schres.2014.11.033.

W. Rössler, V. Ajdacic-Gross, M. Müller, S. Rodgers, H. Haker, and M. P. Hengartner, “Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach,” Schizophrenia Research, vol. 161, no. 2-3, pp. 194–201, Feb. 2015, doi: 10.1016/j.schres.2014.11.033.

RÖSSLER, Wulf, Vladeta AJDACIC-GROSS, Mario MÜLLER, Stephanie RODGERS, Helene HAKER und Michael Pascal HENGARTNER, 2015. Assessing sub-clinical psychosis phenotypes in the general population : a multidimensional approach. Schizophrenia Research. Februar 2015. Bd. 161, Nr. 2-3, S. 194–201. DOI 10.1016/j.schres.2014.11.033

Rössler, Wulf, Vladeta Ajdacic-Gross, Mario Müller, Stephanie Rodgers, Helene Haker, and Michael Pascal Hengartner. 2015. “Assessing Sub-Clinical Psychosis Phenotypes in the General Population : A Multidimensional Approach.” Schizophrenia Research 161 (2-3): 194–201. https://doi.org/10.1016/j.schres.2014.11.033.

Rössler, Wulf, et al. “Assessing Sub-Clinical Psychosis Phenotypes in the General Population : A Multidimensional Approach.” Schizophrenia Research, vol. 161, no. 2-3, Feb. 2015, pp. 194–201, https://doi.org/10.1016/j.schres.2014.11.033.