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Demographic corrections appear to compromise classification accuracy for severely skewed cognitive tests.
- Source :
-
Journal of clinical and experimental neuropsychology [J Clin Exp Neuropsychol] 2011 Apr; Vol. 33 (4), pp. 422-31. Date of Electronic Publication: 2010 Dec 10. - Publication Year :
- 2011
-
Abstract
- Demographic corrections for cognitive tests should improve classification accuracy by reducing age or education biases, but empirical support has been equivocal. Using a simulation procedure, we show that creating moderate or extreme skewness in cognitive tests compromises the classification accuracy of demographic corrections, findings that appear replicated within clinical data for the few neuropsychological test scores with an extreme degree of skew. For most neuropsychological tests, the dementia classification accuracy of raw and demographically corrected scores was equivalent. These findings suggest that the dementia classification accuracy of demographic corrections is robust to slight degrees of skew (i.e., skewness <1.5).
Details
- Language :
- English
- ISSN :
- 1744-411X
- Volume :
- 33
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of clinical and experimental neuropsychology
- Publication Type :
- Academic Journal
- Accession number :
- 21154077
- Full Text :
- https://doi.org/10.1080/13803395.2010.532114