Estimation of premorbid intelligence in schizophrenia.

To determine whether the National Adult Reading Test (NART) would provide a valid estimate of premorbid intelligence in schizophrenia, two schizophrenic samples were recruited, one consisting of 35 patients resident in long-stay wards, the other of 29 patients normally resident in the community. Sch...

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Main Authors: Crawford, JR, Besson, J, Bremner, M, Ebmeier, K, Cochrane, R, Kirkwood, K
Format: Journal article
Language:English
Published: 1992
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author Crawford, JR
Besson, J
Bremner, M
Ebmeier, K
Cochrane, R
Kirkwood, K
author_facet Crawford, JR
Besson, J
Bremner, M
Ebmeier, K
Cochrane, R
Kirkwood, K
author_sort Crawford, JR
collection OXFORD
description To determine whether the National Adult Reading Test (NART) would provide a valid estimate of premorbid intelligence in schizophrenia, two schizophrenic samples were recruited, one consisting of 35 patients resident in long-stay wards, the other of 29 patients normally resident in the community. Schizophrenic patients were individually matched for age, sex, and education with a healthy, normal subject. Both schizophrenic samples scored significantly lower on the Wechsler Adult Intelligence Scale (WAIS) than their respective control groups. NART-estimated IQ did not differ significantly between the community-resident schizophrenics and their controls, suggesting that the NART provides a valid means of estimating premorbid intelligence in such a population. NART-estimated IQ was significantly lower in the long-stay sample than in their controls. Although low NART scores in this latter sample could be a valid reflection of low premorbid IQ, the alternative explanation that NART performance was impaired by onset of the disease cannot be ruled out.
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spelling oxford-uuid:01a7e619-4d9c-40ee-91a3-3b8949b310ec2022-03-26T08:36:11ZEstimation of premorbid intelligence in schizophrenia.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:01a7e619-4d9c-40ee-91a3-3b8949b310ecEnglishSymplectic Elements at Oxford1992Crawford, JRBesson, JBremner, MEbmeier, KCochrane, RKirkwood, KTo determine whether the National Adult Reading Test (NART) would provide a valid estimate of premorbid intelligence in schizophrenia, two schizophrenic samples were recruited, one consisting of 35 patients resident in long-stay wards, the other of 29 patients normally resident in the community. Schizophrenic patients were individually matched for age, sex, and education with a healthy, normal subject. Both schizophrenic samples scored significantly lower on the Wechsler Adult Intelligence Scale (WAIS) than their respective control groups. NART-estimated IQ did not differ significantly between the community-resident schizophrenics and their controls, suggesting that the NART provides a valid means of estimating premorbid intelligence in such a population. NART-estimated IQ was significantly lower in the long-stay sample than in their controls. Although low NART scores in this latter sample could be a valid reflection of low premorbid IQ, the alternative explanation that NART performance was impaired by onset of the disease cannot be ruled out.
spellingShingle Crawford, JR
Besson, J
Bremner, M
Ebmeier, K
Cochrane, R
Kirkwood, K
Estimation of premorbid intelligence in schizophrenia.
title Estimation of premorbid intelligence in schizophrenia.
title_full Estimation of premorbid intelligence in schizophrenia.
title_fullStr Estimation of premorbid intelligence in schizophrenia.
title_full_unstemmed Estimation of premorbid intelligence in schizophrenia.
title_short Estimation of premorbid intelligence in schizophrenia.
title_sort estimation of premorbid intelligence in schizophrenia
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