The influence of negative and affective symptoms on anhedonia self-report in schizophrenia.
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Jarratt-Barnham, I., Saleh, Y., Husain, M., Kirkpatrick, B., & Fernandez-Egea, E. (2020). The influence of negative and affective symptoms on anhedonia self-report in schizophrenia.. Comprehensive psychiatry, 98 152165. https://doi.org/10.1016/j.comppsych.2020.152165
Background Anhedonia, a symptom prevalent in schizophrenia patients, is thought to arise either within negative symptomatology or from secondary sources, such as depression. The common co-occurrence of these diseases complicates the assessment of anhedonia in schizophrenia. Method In a sample of 40 outpatients with chronic schizophrenia, we explored both the validity of the Snaith-Hamilton Pleasure Scale (SHAPS) self-report for anhedonia assessment and those factors influencing its scoring. We assessed negative symptoms using the Brief Negative Symptom Scale (BNSS), depression symptoms using the Calgary Depression Scale for Schizophrenia (CDSS) and cognitive impairment using the Brief Assessment of Cognition in Schizophrenia (BACS), before exploring associations between these scales. Results The SHAPS was validated for use in schizophrenia. SHAPS scores were not associated with negative symptoms or cognitive impairment but were linked to a single Depression symptom: Hopelessness (r=0.52, p<0.001). Conclusions SHAPS scores, therefore, appear to only reflect anticipatory anhedonia arising from the affective domain. We advocate the development of multi-faceted self-report measures to more holistically assess anhedonia in schizophrenia.
M.H is funded by a Wellcome Trust Principal Research Fellowship and by the NIHR BRC at Oxford. E.F.E and the research database were supported by intramural funding from CPFT and the UK National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre (BRC).
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External DOI: https://doi.org/10.1016/j.comppsych.2020.152165
This record's URL: https://www.repository.cam.ac.uk/handle/1810/301299
Attribution 4.0 International (CC BY)
Licence URL: http://creativecommons.org/licenses/by/4.0/