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Self-monitoring in patients with schizophrenia

Published online by Cambridge University Press:  04 November 2004

GÜNTHER KNOBLICH ,
FRANK STOTTMEISTER  and
TILO KIRCHER
GÜNTHER KNOBLICH
Affiliation:
Max Planck Institute for Psychological Research, Munich, Germany; Department of Psychiatry, University of Tübingen, Germany
FRANK STOTTMEISTER
Affiliation:
Max Planck Institute for Psychological Research, Munich, Germany; Department of Psychiatry, University of Tübingen, Germany
TILO KIRCHER
Affiliation:
Max Planck Institute for Psychological Research, Munich, Germany; Department of Psychiatry, University of Tübingen, Germany
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Abstract

Background. The present study investigated whether a failure of self-monitoring contributes to core syndromes of schizophrenia.

Method. Three groups of patients with a DSM-IV diagnosis of schizophrenia (n=27), with either prominent paranoid hallucinatory or disorganization syndrome, or without these symptoms, and a matched healthy control group (n=23) drew circles on a writing pad connected to a PC monitor. Subjects were instructed to continuously monitor the relationship between their hand movements and their visual consequences. They were asked to detect gain changes in the mapping. Self-monitoring ability and the ability to automatically correct movements were assessed.

Results. Patients with either paranoid-hallucinatory syndrome or formal thought disorder were selectively impaired in their ability to detect a mismatch between a self-generated movement and its consequences, but not impaired in their ability to automatically compensate for the gain change.

Conclusions. These results support the claim that a failure of self-monitoring may underlie the core symptoms of schizophrenia.

Type
Research Article
Information
Psychological Medicine , Volume 34 , Issue 8 , November 2004 , pp. 1561 - 1569
Copyright
© 2004 Cambridge University Press

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