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Impairment of memory organization in patients with schizophrenia or schizotypal disorder

Published online by Cambridge University Press:  08 September 2006

MIÉ MATSUI ,
HIROMI YUUKI ,
KANADE KATO  and
MASAYOSHI KURACHI
MIÉ MATSUI
Affiliation:
Department of Neuropsychology and Neuropsychiatry, School of Medicine, University of Toyama, Toyama, Japan Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
HIROMI YUUKI
Affiliation:
Department of Neuropsychology and Neuropsychiatry, School of Medicine, University of Toyama, Toyama, Japan
KANADE KATO
Affiliation:
Department of Neuropsychology and Neuropsychiatry, School of Medicine, University of Toyama, Toyama, Japan
MASAYOSHI KURACHI
Affiliation:
Department of Neuropsychology and Neuropsychiatry, School of Medicine, University of Toyama, Toyama, Japan Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Tokyo, Japan
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Abstract

Verbal learning and the organization of memory in patients with schizophrenia or schizotypal disorder were compared with normal subjects. Three indices of memory organization (semantic clustering, serial clustering, and subjective clustering) were calculated from participants' responses on the Japanese Verbal Learning Test. Schizophrenic and schizotypal patients showed similar decrements in semantic organization compared with normal subjects. Neither patient group showed any effect of learning on their use of semantic organization, although both groups recalled more items as the number of trials increased. These results suggest that impairment of memory organization is a common characteristic of schizophrenia spectrum disorders (JINS, 2006, 12, 750–754.)

Keywords

PsychosisSchizotypyMemorySemantic organizationVerbal learningNeuropsychological function
Type
BRIEF COMMUNICATIONS
Information
Journal of the International Neuropsychological Society , Volume 12 , Issue 5 , September 2006 , pp. 750 - 754
Copyright
© 2006 The International Neuropsychological Society

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