Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Association between processing speed and subclinical psychotic symptoms in the general population : focusing on sex differences
Authors: Rössler, Wulf
Ajdacic-Gross, Vladeta
Müller, Mario
Rodgers, Stephanie
Kawohl, Wolfram
Haker, Helene
Hengartner, Michael Pascal
DOI: 10.1016/j.schres.2015.05.026
Published in: Schizophrenia Research
Volume(Issue): 166
Issue: 1-3
Page(s): 316
Pages to: 321
Issue Date: Aug-2015
Publisher / Ed. Institution: Elsevier
ISSN: 0920-9964
1573-2509
Language: English
Subjects: Subclinical psychosis; Psychotic-like experiences; Schizotypy; Schizophrenia spectrum; Cognitive deficits; Processing speed; Sex differences
Subject (DDC): 305: Groups (age, origine, gender, income)
616.89: Mental disorders, clinical psychology and psychiatry
Abstract: Evidence is growing that persons along the schizophrenia spectrum, i.e., those who also display subclinical psychotic symptoms, exhibit deficits across a broad range of neuropsychological domains. Because sex differences in the association between cognitive deficits and psychosis have thus far been mostly neglected, we believe that ours is the first study specifically focused upon those differences when examining the relationship between subclinical psychosis and processing speed. Using a sample of 213 persons from the general population from Zurich, Switzerland, psychotic symptoms were assessed with three different questionnaires including the Schizotypal Personality Questionnaire, an adaptation of the Structured Interview for Assessing Perceptual Anomalies, and the Paranoia Checklist. Processing speed was assessed with the WAIS digit-symbol coding test. Two higher-order psychosis domains were factor-analytically derived from the various psychosis subscales and then subjected to a series of linear regression analyses. The results demonstrate that in both men and women associations between subclinical psychosis domains and processing speed were weak to moderate (β ranging from − 0.18 to − 0.27; all p < 0.05). However, we found no sex-differences in the interrelation of subclinical psychosis and processing speed (ΔR2 < 0.005; p > 0.30). In conclusion, it appears that sex differences in psychosis manifest themselves only at the high end of the continuum (full-blown schizophrenia) and not across the sub-threshold range. The small magnitude of the effects reported herein conforms to the etiopathology of the disorder. Since schizophrenia and related disorders from the spectrum are assumed to be multifactorial diseases, it follows that many etiological components of small effect are involved.
URI: https://digitalcollection.zhaw.ch/handle/11475/2285
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., Kawohl, W., Haker, H., & Hengartner, M. P. (2015). Association between processing speed and subclinical psychotic symptoms in the general population : focusing on sex differences. Schizophrenia Research, 166(1-3), 316–321. https://doi.org/10.1016/j.schres.2015.05.026
Rössler, W. et al. (2015) ‘Association between processing speed and subclinical psychotic symptoms in the general population : focusing on sex differences’, Schizophrenia Research, 166(1-3), pp. 316–321. Available at: https://doi.org/10.1016/j.schres.2015.05.026.
W. Rössler et al., “Association between processing speed and subclinical psychotic symptoms in the general population : focusing on sex differences,” Schizophrenia Research, vol. 166, no. 1-3, pp. 316–321, Aug. 2015, doi: 10.1016/j.schres.2015.05.026.
RÖSSLER, Wulf, Vladeta AJDACIC-GROSS, Mario MÜLLER, Stephanie RODGERS, Wolfram KAWOHL, Helene HAKER und Michael Pascal HENGARTNER, 2015. Association between processing speed and subclinical psychotic symptoms in the general population : focusing on sex differences. Schizophrenia Research. August 2015. Bd. 166, Nr. 1-3, S. 316–321. DOI 10.1016/j.schres.2015.05.026
Rössler, Wulf, Vladeta Ajdacic-Gross, Mario Müller, Stephanie Rodgers, Wolfram Kawohl, Helene Haker, and Michael Pascal Hengartner. 2015. “Association between Processing Speed and Subclinical Psychotic Symptoms in the General Population : Focusing on Sex Differences.” Schizophrenia Research 166 (1-3): 316–21. https://doi.org/10.1016/j.schres.2015.05.026.
Rössler, Wulf, et al. “Association between Processing Speed and Subclinical Psychotic Symptoms in the General Population : Focusing on Sex Differences.” Schizophrenia Research, vol. 166, no. 1-3, Aug. 2015, pp. 316–21, https://doi.org/10.1016/j.schres.2015.05.026.


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