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KMID : 0605720060120020215
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Journal of the Korean Society of Biological Therapies in Psychiatry
2006 Volume.12 No. 2 p.215 ~ p.223
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An Investigation into Theory of Mind of Schizophrenia Using Hinting Task and Eyes Task
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Hur Doo-Ho
Park Jae-Hong
Kwon Sung-Min
Kim Yang-Tae
Kwon Do-Hoon
Cho Sung-Nam
Yoo Byung-Kuk
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Abstract
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Objectives：The aim of this study was to investigate the ability to infer others’ intentions and emotions, i.e. Theory of mind(ToM), in schizophrenic patients.
Methods：Twenty-three patients with schizophrenia and 30 healthy matched controls were administrated to ToM tasks, as assessed by the False-Belief Task, the Hinting Task and the Eye Task. All participants also underwent computerized versions of the Wisconsin Card Sorting Test, as the measure of working memory.
Results：The schizophrenic group performed poorly on ToM tasks relative to controls. There was no significant correlation among the performances of ToM tasks in the schizophrenic group. We also couldn’t find any relations between ToM performance and working memory within schizophrenic group.
Conclusions：These data suggest that schizophrenic patients have a specific deficit of the cognitive ability referred to as ToM, that the intention-inferring ability and the emotion-inferring ability are different processes, and that impaired working memory does not account for the deficits of ToM in schizophrenia.
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KEYWORD
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Schizophrenia, Theory of mind, Hinting task, Eye task
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