New measures to detect malingered neurocognitive deficit: applying reaction time and event-related potentials.
The ability of the Test of Memory Malingering (TOMM), reaction times (RTs), and event-related potentials (ERPs) to detect malingered neurocognitive deficit (MNCD) was examined in 32 normal individuals answering under honest (HON; n = 16) or malingering (MAL; n = 16) instructions as well as in 15 patients with traumatic brain injury (TBI) who answered under honest instructions. Overall, the TOMM was the most effective at classifying groups. However, new accuracy, RT, and ERP measures reached promising hit rates in the range of 71-88%. In particular, the difference in frontal versus posterior ERP obtained during an old-new task was effective at classifying MAL versus TBI (hit rate = 87%).
Vagnini
Victoria L
VL
University of Kentucky, Lexington, KY, USA.
Berry
David T R
DT
Clark
Jessica A
JA
Jiang
Yang
Y
D000328:Adult; D001930:Brain Injuries / Q000150:complications / Q000175:diagnosis; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology; D004185:Disability Evaluation; D004569:Electroencephalography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008306:Malingering / Q000175:diagnosis*; D008875:Middle Aged; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology*; D012720:Severity of Illness Index