Suppressed working memory on the WMS-III as a marker for poor effort
Lange, Rael T. , Iverson, Grant L., Sullivan, Karen A., & Anderson, Deborah S. (2006) Suppressed working memory on the WMS-III as a marker for poor effort. Journal of Clinical and Experimental Neuropsychology, 28(3), pp. 294-305.
The purpose of this study was to examine the clinical utility of memory minus Working Memory Index (memory-WMI) discrepancy scores on the WMS-III for detecting poor effort in 145 personal injury litigants (19 poor effort, 126 adequate effort). On average, participants in the poor effort group performed significantly lower on all WMS-III memory indexes and demonstrated larger memory-WMI discrepancy scores compared to participants in the adequate effort group. Discriminant function analyses using memory-WMI discrepancy scores as independent variables revealed poor overall classification rates (60.0% to 63.4%). Based on the prevalence of unusually suppressed attention-concentration ability relative to memory functioning using unidirectional memory-WMI discrepancy scores, high specificity and negative predictive power values were found. However, there was unacceptably low sensitivity and positive predictive power. These results suggest that memory-WMI discrepancy scores on the WMS-III do not provide clinically useful information regarding response set and should be used cautiously as an indicator of poor effort.
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|Item Type:||Journal Article|
|Keywords:||Neuropsychology, malingering, faking, psychology, memory|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Institutes > Institute of Health and Biomedical Innovation
|Copyright Owner:||Copyright 2006 Taylor & Francis|
|Copyright Statement:||First published in Journal of Clinical and Experimental Neuropsychology 28(3):pp. 294-305.|
|Deposited On:||16 Nov 2006|
|Last Modified:||29 Feb 2012 23:25|
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