Detecting malingering in traumatic brain injury: Combining response time with performance validity test accuracy

The Clinical Neuropsychologist
Robert J KanserRobin A Hanks

Abstract

The present study examined the incremental utility of item-level response time (RT) variables on a traditional performance validity test in distinguishing adults with verified TBI from adults coached to feign neurocognitive impairment. Participants were 45 adults with moderate to severe TBI, 45 healthy adults coached to feign neurocognitive impairment (SIM), and 61 healthy adult comparisons providing full effort (HC). All participants completed a computerized version of the Test of Memory Malingering (TOMM-C) in the context of a larger test battery. RT variables examined along with TOMM-C accuracy scores included mean RTs (Trial 1, Trial 2, correct and incorrect trials) and RT variability indices. Several RT indices differed significantly across the groups. In general, SIM produced longer, more variable RTs than HC and TBI. Of the RT indices, average RT for Trial 1 and 2 were the best predictors of group membership; however, classification accuracies were greatly influenced by the groups being compared. Average RT for Trial 1 and 2 showed excellent discrimination of SIM and HC. All RT indices were less successful in discriminating SIM and TBI. Average RT for Trial 1 and 2 added incremental predictive value to TOMM-C accuracy in...Continue Reading

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Feb 19, 2020·The Clinical Neuropsychologist·Sarah D PatrickJesse R Bashem
Jul 15, 2020·The Clinical Neuropsychologist·Christopher A AbeareLaszlo A Erdodi
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Dec 22, 2021·Applied Neuropsychology. Adult·Robert J KanserSarah D Patrick

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Brain Injury & Trauma

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