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Exploring ‘theory of mind’ in people with schizophrenia

Published online by Cambridge University Press:  09 July 2009

Christopher D. Frith  and
Rhiannon Corcoran
Christopher D. Frith*
Affiliation:
Department of Psychology, University College London and Wellcome Department of Cognitive Neurology, Institute of Neurology, London
Rhiannon Corcoran
Affiliation:
Department of Psychology, University College London and Wellcome Department of Cognitive Neurology, Institute of Neurology, London
*
1Address for correspondence: Professor Christopher D. Frith, Wellcome Department of Cognitive Neurology, Institute of Neurology, 12 Queen Square, London WC1N 3BG.
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Synopsis

Mentalizing ability was studied in 46 symptomatic schizophrenic patients and 44 non-symptomatic controls. Subjects heard six stories and simultaneously were shown simple cartoon pictures depicting the action sequencing occurring in the stories. All the stories involved false belief or deception, so that it was necessary to infer the mental states of the characters in order to understand their behaviour. After each story, subjects were asked one memory/reality question (concerning an event in the story) and one question that depended on the ability to infer the mental state of one of the characters. Patients with paranoid delusions were impaired on the questions concerning mental states. Patients with behavioural signs (i.e. negative features or incoherence) were also impaired on the mental state questions, but this difficulty was associated with memory impairments. Patients with symptoms of passivity (e.g. delusions of control) and patients in remission did not differ from normal controls. These results are consistent with the hypothesis that certain of the positive symptoms of schizophrenia reflect an impairment in the ability to infer the mental states of others.

Type
Original Articles
Information
Psychological Medicine , Volume 26 , Issue 3 , May 1996 , pp. 521 - 530
Copyright
Copyright © Cambridge University Press 1996

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