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dc.contributor.authorKreis, Isabel Viola
dc.contributor.authorMoritz, Steffen
dc.contributor.authorPfuhl, Gerit
dc.date.accessioned2020-08-10T13:26:26Z
dc.date.available2020-08-10T13:26:26Z
dc.date.issued2020-07-09
dc.description.abstract<i>Background and Objectives</i>: Performance on cognitive tasks is often impaired in individuals with schizophrenia (SCZ), possibly resulting from either cognitive deficits (e.g., limited working memory capacity) or diminished mental effort or both. Investment of mental effort itself can be affected by cognitive resources, task load, and motivational factors and has thus proven difficult to measure. Pupil dilation during task performance has been proposed as an objective measure, but it remains unclear to what extent this converges with self-reports of perceived task demands, motivation, and invested effort. The current study tried to elucidate this question.<p> <p><i>Methods</i>: A visual version of the digit span task was administered in a sample of 29 individuals with a diagnosis from the SCZ spectrum and 30 individuals without any psychiatric disorder. Pupil size was recorded during the task, whereas self-reported invested effort and task demand were measured afterward.<p> <p><i>Results</i>: No group difference was found for working memory capacity, but individuals with SCZ showed diminished trial-by-trial recall accuracy, showed reduced pupil dilation across all task load conditions, and reported higher perceived task demands.<p> <p><i>Conclusion</i>: Results indicate reduced effort investment in patients with SCZ, but it remains unclear to what extent this alone could explain the lower recall performance. The lack of a direct link between objective and subjective measures of effort further suggests that both may assess different facets of effort. This has important implications for clinical and research settings that rely on the reliability of neuropsychological test results when assessing cognitive capacity in this patient group.en_US
dc.identifier.citationKreis IV, Moritz S, Pfuhl G. Objective Versus Subjective Effort in Schizophrenia. Frontiers in Psychology. 2020en_US
dc.identifier.cristinIDFRIDAID 1820385
dc.identifier.doihttps://doi.org/10.3389/fpsyg.2020.01469
dc.identifier.issn1664-1078
dc.identifier.urihttps://hdl.handle.net/10037/18929
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.relation.ispartofKreis, I.V. (2021). Metacognition and decision-making in schizophrenia: Exploring how aberrant processing and representation of uncertainty may explain cognitive-behavioral biases. (Doctoral thesis). <a href=https://hdl.handle.net/10037/20694>https://hdl.handle.net/10037/20694</a>
dc.relation.journalFrontiers in Psychology
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRIMEDBIO/262338/Norway/Too precise or too imprecise: which parameter is gone awry in autism and psychosis//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Social science: 200::Psychology: 260en_US
dc.subjectVDP::Samfunnsvitenskap: 200::Psykologi: 260en_US
dc.titleObjective Versus Subjective Effort in Schizophreniaen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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