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  • Devaluation of Rewards for the Future Is Associated With Schizotypal Personality Features

    Author(s)
    Li, Zhi
    Shi, Yan-Fang
    Parker, Giverny J
    Huang, Jia
    Yan, Chao
    Lui, Simon SY
    Cheung, Eric FC
    Neumann, David L
    Shum, David HK
    Chan, Raymond CK
    Griffith University Author(s)
    Neumann, David L.
    Year published
    2016
    Metadata
    Show full item record
    Abstract
    Objective: Empirical evidence has suggested that schizophrenia is associated with dysfunctions in the reward system and working memory. However, little is known about individuals at risk for schizophrenia. In particular, it is not known if those with schizotypal personality features will show similar deficits in these two domains. This study examined whether individuals with schizotypal personality disorder features will subjectively devalue potential rewards in the future and show changes in their decision-making behaviour, compared with healthy controls, and whether this devaluation is inversely associated with working ...
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    Objective: Empirical evidence has suggested that schizophrenia is associated with dysfunctions in the reward system and working memory. However, little is known about individuals at risk for schizophrenia. In particular, it is not known if those with schizotypal personality features will show similar deficits in these two domains. This study examined whether individuals with schizotypal personality disorder features will subjectively devalue potential rewards in the future and show changes in their decision-making behaviour, compared with healthy controls, and whether this devaluation is inversely associated with working memory performance. Method: A total of 44 participants with schizotypal personality features and 22 healthy control participants without schizotypal personality features completed the Monetary-Choice Questionnaire, the Cambridge Gambling Task, and number and letter span tasks, which assessed delay-discounting rate, decision-making behaviour, and working memory, respectively. Results: The results showed that participants with schizotypal personality features, especially those with negative features, valued delayed rewards in the future to a lesser extent than healthy control participants. However, there was no significant group difference in decision-making on the Cambridge Gambling Task. Moreover, the delay-discounting rate of individuals with schizotypal personality features correlated signifi- cantly with working memory performance. Conclusion: The findings suggest that people with schizotypal personality features may be impaired in future reward perception and that this impairment is related to their working memory ability, although their capacity to make decisions is not affected.
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    Journal Title
    Australian Psychologist
    DOI
    https://doi.org/10.1111/ap.12141
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Psychology
    Cognitive and computational psychology
    Cognition
    Publication URI
    http://hdl.handle.net/10072/123765
    Collection
    • Journal articles

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