ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA

John Robertson Crawford, J A O BESSON, M BREMNER, K P EBMEIER, R H B COCHRANE, K KIRKWOOD

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalBritish Journal of Psychiatry
Volume161
Publication statusPublished - Jul 1992

Keywords

  • ADULT READING TEST
  • NART
  • MEMORY
  • WAIS
  • IQ

Cite this

Crawford, J. R., BESSON, J. A. O., BREMNER, M., EBMEIER, K. P., COCHRANE, R. H. B., & KIRKWOOD, K. (1992). ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA. British Journal of Psychiatry, 161, 69-74.

ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA. / Crawford, John Robertson; BESSON, J A O ; BREMNER, M ; EBMEIER, K P ; COCHRANE, R H B ; KIRKWOOD, K .

In: British Journal of Psychiatry, Vol. 161, 07.1992, p. 69-74.

Research output: Contribution to journalArticle

Crawford, JR, BESSON, JAO, BREMNER, M, EBMEIER, KP, COCHRANE, RHB & KIRKWOOD, K 1992, 'ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA', British Journal of Psychiatry, vol. 161, pp. 69-74.
Crawford JR, BESSON JAO, BREMNER M, EBMEIER KP, COCHRANE RHB, KIRKWOOD K. ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA. British Journal of Psychiatry. 1992 Jul;161:69-74.
Crawford, John Robertson ; BESSON, J A O ; BREMNER, M ; EBMEIER, K P ; COCHRANE, R H B ; KIRKWOOD, K . / ESTIMATION OF PREMORBID INTELLIGENCE IN SCHIZOPHRENIA. In: British Journal of Psychiatry. 1992 ; Vol. 161. pp. 69-74.
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