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Detecting feigned impairment with the word list recognition of the Wechsler Memory Scale-3rd edition
Vicki L Hacker1, Christopher Jones
1Brain Injury Rehabilitation Trust, Birmingham, UK. vicki.hacker@walsall.nhs.uk
Primary Objective:
To cross-validate the WMS-III Word List Recognition (WLR) sub-test as an embedded symptom validity measure using a simulator validation paradigm.
Methods And Procedures:
Between subjects and cross-sectional correlational designs were employed with 27 traumatic brain injury (TBI), 30 control and 30 analogue malingerer participants. All participants were administered a battery of tests of cognitive functioning.
Results:
The WLR yielded low-to-high levels of sensitivity (40-73%) and high specificity (95-100%), although there was some evidence to suggest that it is sensitive to severe cognitive impairment.
Conclusions:
Overall the findings provide preliminary evidence to support the use of the WLR as an embedded symptom validity indicator. These findings, however, require further cross-validation with larger clinical samples in order to assess its ecological validity.
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