J Clin Psychol. 1979 Apr;35(2):358-63. doi: 10.1002/1097-4679(197904)35:2<358::aid-jclp2270350227>3.0.co;2-i.

Level and variability of performance on neuropsychological tests.

Journal of clinical psychology

R A Lehman, G J Chelune, R K Heaton

PMID: 457899 DOI: 10.1002/1097-4679(197904)35:2<358::aid-jclp2270350227>3.0.co;2-i

Abstract

Compared non-specific variability across subtests and overall level of performance on the Wechsler Adult Intelligence Scale (WAIS) and the Halstead-Reitan Battery (HRB) for normal, schizophrenic, acute and chronic brain-damaged Ss. Both variability and level of performance measures for each of the two test batteries significantly distinguished normal from abnormal Ss, but the HRB measures were more sensitive. Intra-S variability across subtests had a significant negative correlation with level of performance on the HRB, but not on the WAIS. This correlation could not be accounted for fully by a ceiling effect and was thought to represent in part a characteristic feature of ts performance on the HRB. While WAIS variability appeared to be independent of level of performance, it was not much help in differentiating between the four S groups. It was concluded that non-specific variability across subtests is not a helpful independent measure of neuropsychological function on the two batteries studied.

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MeSH terms

• Adult
• Brain Damage, Chronic / diagnosis
• Brain Damage, Chronic / psychology
• Humans
• Psychological Tests*
• Schizophrenia / diagnosis
• Schizophrenic Psychology*
• Wechsler Scales

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• Journal Article

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