PMID: 9167543Jun 1, 1997Paper

Cognitive deficit measures in schizophrenia: factor structure and clinical correlates

The American Journal of Psychiatry
F Lieh-Mak, P W Lee

Abstract

The authors aimed to delineate the "common denominators" across a representative number of cognitive measures by administering such measures to a large number of schizophrenic subjects. The authors also aimed to study the consistency of the subjects' performance over a 1-year period and to look into the relationship between cognitive task performance and clinical status. One hundred fifty-seven schizophrenic subjects with a DSM-III-R diagnosis of schizophrenia were assessed under standardized testing conditions on the dichotic listening and shadowing task, the span of apprehension task, the simple reaction time tasks, the critical stimulus duration, and the interstimulus interval in which they would become free from the masking effect. The clinical status of the subjects was assessed during index assessment, and 97 subjects were reassessed at the end of 1 year. Forty-seven subjects were randomly selected for reassessment on the cognitive tasks administered 1 year earlier. The subjects' performance was compared to that of 56 nonschizophrenic patients with nasopharyngeal carcinoma who had undergone radiation therapy. The cognitive task scores were factor analyzed, giving five distinct factors made up of the span of apprehension a...Continue Reading

Citations

Sep 8, 2006·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Frederick Ka Ching Yeung, Sunny Ho Wan Chan
Oct 27, 2009·Schizophrenia Research·Roberto Rodriguez-JimenezUNKNOWN PARG
Mar 3, 2007·Progress in Neuro-psychopharmacology & Biological Psychiatry·Dorit Ben-ShacharNanette Freedman
Nov 11, 2006·Schizophrenia Research·Robin EmsleyUNKNOWN Early Psychosis Global Working Group
Sep 26, 2002·The British Journal of Psychiatry. Supplement·S FriisT H McGlashan

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