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Problems in the measurement of cognitive deficits.

Chapman, Loren J., Chapman, Jean P.·1973·Psychological Bulletin

Abstract

Several dozen studies of differential cognitive deficit appear each year. Artifacts cloud the findings in a majority of these studies because of differences in discriminating power of tasks coupled with generalized deficit of the patients. With two tests of differing reliability, the test with the higher reliability will yield greater performance deficit for the less able subjects. We argue for the advisability, in studies of differential cognitive deficit, of matching tasks on reliability, shape of the distribution of scores, and mean, variance, and shape of the distribution of item difficulty, using normal subjects alone as a standardization group.

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Metadata

Authors
Chapman, L. J., & Chapman, J. P.
Venue
Psychological Bulletin
Published
1973
Volume
79
Issue
6
Pages
380-385
ISSN
  • 0033-2909 (ISSN-L)
  • 1939-1455
OpenAlex
W2052157612
Cited by
383
References
0
FWCI
12.82
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Problems in the measurement of cognitive deficits. https://app.cochat.ai/papers/10.1037/h0034541
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Chapman, L. J., & Chapman, J. P. (1973). Problems in the measurement of cognitive deficits. Psychological Bulletin. https://doi.org/10.1037/h0034541

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.