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  • High-functioning autism patients share similar but more severe impairments in verbal theory of mind than schizophrenia patients

    Author(s)
    Tin, LNW
    Lui, SSY
    Ho, KKY
    Hung, KSY
    Wang, Y
    Yeung, HKH
    Wong, TY
    Lam, SM
    Chan, RCK
    Cheung, EFC
    Griffith University Author(s)
    Chan, Raymond
    Year published
    2018
    Metadata
    Show full item record
    Abstract
    Background Evidence suggests that autism and schizophrenia share similarities in genetic, neuropsychological and behavioural aspects. Although both disorders are associated with theory of mind (ToM) impairments, a few studies have directly compared ToM between autism patients and schizophrenia patients. This study aimed to investigate to what extent high-functioning autism patients and schizophrenia patients share and differ in ToM performance.Methods Thirty high-functioning autism patients, 30 schizophrenia patients and 30 healthy individuals were recruited. Participants were matched in age, gender and estimated intelligence ...
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    Background Evidence suggests that autism and schizophrenia share similarities in genetic, neuropsychological and behavioural aspects. Although both disorders are associated with theory of mind (ToM) impairments, a few studies have directly compared ToM between autism patients and schizophrenia patients. This study aimed to investigate to what extent high-functioning autism patients and schizophrenia patients share and differ in ToM performance.Methods Thirty high-functioning autism patients, 30 schizophrenia patients and 30 healthy individuals were recruited. Participants were matched in age, gender and estimated intelligence quotient. The verbal-based Faux Pas Task and the visual-based Yoni Task were utilised to examine first-and higher-order, affective and cognitive ToM. The task/item difficulty of two paradigms was examined using mixed model analyses of variance (ANOVAs). Multiple ANOVAs and mixed model ANOVAs were used to examine group differences in ToM.Results The Faux Pas Task was more difficult than the Yoni Task. High-functioning autism patients showed more severely impaired verbal-based ToM in the Faux Pas Task, but shared similar visual-based ToM impairments in the Yoni Task with schizophrenia patients.Conclusions The findings that individuals with high-functioning autism shared similar but more severe impairments in verbal ToM than individuals with schizophrenia support the autism-schizophrenia continuum. The finding that verbal-based but not visual-based ToM was more impaired in high-functioning autism patients than schizophrenia patients could be attributable to the varied task/item difficulty between the two paradigms.
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    Journal Title
    Psychological Medicine
    Volume
    48
    Issue
    8
    DOI
    https://doi.org/10.1017/S0033291717002690
    Subject
    Neurosciences
    Health services and systems
    Public health
    Psychology
    Publication URI
    http://hdl.handle.net/10072/385204
    Collection
    • Journal articles

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