Discrimination of schizophrenic and brain-injured patients by a standardized version of Luria's Neuropsychological Tests

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Examines the ability of a standardized battery of tests, the Luria-South Dakota Neuropsychological Test Battery, to discriminate between brain-injured and schizophrenic patients. An earlier study by the present authors (see record 1979-25087-001) reported 93% effectiveness for the standardized battery in discriminating brain-injured patients and normal controls. In the present study, the battery was administered to 50 schizophrenic, mean age 41.3 yrs, and 50 brain-injured patients, mean age 44.4 yrs. Chronicity was 121 mo for the schizophrenic group and 56 mo for the neurological patients. Of the 282 items in the battery, schizophrenics showed significantly better performance on 72 items. A discriminant analysis using 60 items demonstrated 100% diagnostic accuracy. Schizophrenics performed significantly better on 10 of 14 summary measures. A discriminant analysis using the 14 summary measures achieved 88% diagnostic accuracy. (28 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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