Abstract
Objective
To investigate the ability of selective measures on the Wisconsin Card Sorting Test-64 (WCST-64) to predict noncredible neurocognitive dysfunction in a large sample of mild traumatic brain injury (mTBI) litigants.
Method
Participants included 114 adults who underwent a comprehensive neuropsychological examination. Criterion groups were formed based upon their performance on stand-alone measures of cognitive performance validity (PVT).
Results
Participants failing PVTs performed worse across all WCST-64 dependent variables of interest compared to participants who passed PVTs. Receiver operating curve analysis revealed that only categories completed was a significant predictors of PVT status. Multivariate logistic regression did not add to classification accuracy.
Conclusion
Consideration of noncredible executive functioning may be warranted in mild traumatic brain injury (mTBI) litigants who complete ≤ 1 category on the WCST-64.
Acknowledgement
The author wishes to thank Dr. Jeffrey Gornbein, University of California Los Angles, Department of Medicine Statistics Core for providing statistical assistance.
Disclosure statement
The author received compensation for consultation and assessment services.