51. Exaggerated Functional Impairment due to Malingered Neurocognitive Dysfunction Following Mild Traumatic Brain Injury.
- Author
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Elias, David A, MacLaren, Vance V, Brien, Erin K, and Metcalfe, Arron W S
- Subjects
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BRAIN injuries , *MALINGERING , *DISABILITIES , *PAIN catastrophizing , *TEST validity - Abstract
Objective Functional impairment associated with Neurocognitive Disorder is often claimed in medico-legal settings after mild Traumatic Brain Injury (mTBI). This case–control study examined self-reported functional impairment and the plausibility of chronic disability claims following uncomplicated mTBI. Method Independent Medical Evaluations included a battery of performance and symptom validity tests, along with self-reports of physical or emotional complaints and functional impairment. Slick and colleagues' (Slick, D. J. Sherman, E. M. & Iverson, G. L. (1999). Diagnostic criteria for malingered neurocognitive dysfunction: Proposed standards for clinical practice and research. The Clinical Neuropsychologist, 13 , 545–561.) criteria ruled out probable malingering in 21 mTBI cases without psychiatric comorbidity and their self-reports were compared to those of seven non-malingering cases with a psychiatric comorbidity, 17 who were probable malingerers, and 31 orthopedic pain sufferers. Coherence Analysis of medical documentation corroborated assignment of mTBI cases to non-malingering versus probable malingering groups. Results Probable malingerers reported more postconcussion symptoms than non-malingerers (d = 0.79) but they did not differ significantly on tests of neurocognitive performance. Probable malingerers and orthopedic pain patients gave significantly higher ratings of functional impairment (d = 1.28 and 1.26) than non-malingerers. Orthopedic pain patients reported more disability due to pain than non-malingerers (d = 1.03), but pain catastrophizing was rated more highly by the probable malingerers (d = 1.21) as well as by the orthopedic pain patients (d = 0.98). The non-malingerers reported lower emotional distress than the other three groups, but only the probable malingerers reported elevated depression symptoms compared to the non-malingerers (d = 1.01). Conclusions The combined evaluation of performance validity, function, and coherence analysis would appear to enhance the difficult clinical evaluation of postconcussion symptoms in the medical-legal setting. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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