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Perspectives on Neuropsychological Testimony

Authors: Valene J. Gresham, MA, Laura A. Brodie


For the last decade, statistics show traumatic brain injury (TBI) is a growing concern in our legal system. In an effort to obtain data regarding the influence of neuropsychological expert witness testimony in a criminal case, this study tested three hypotheses. H1: The majority of jurors will vote not guilty, due to mild head injury. H2: The jurors will give more credence to the testimony of the neuropsychologist rather than the psychiatrist. H3: The jurors will be more lenient in their sentencing, given the testimony of the neuropsychologist-s testimony. The criterion for inclusion in the study as a participant is identical to those used for inclusion in the eligibility for jury duty in the United States. A chisquared test was performed to analyze the data for the three hypotheses. The results supported all of the hypotheses; however statistical significance was seen in H1 and H2 only.

Keywords: Neuropsychology, traumatic brain injury, Expert Witness, jury decision

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[1] Bay, E., & Bergman, K. (2006). Symptom experience and emotional distress after traumatic brain injury. Care Management Journals, 7, 3-9.
[2] Golden, Z., & Golden, C. J. (2003). Impact of brain injury severity on personality dysfunction. International Journal of Neuroscience, 113, 733-745.
[3] Iverson, G. L., & Lange, R. T. (2003). Examination of "Postconcussionlike" symptoms in a healthy sample. Applied Neuropsychology, 10, 137-144.
[4] Ivkovic, S. K., & Hans, V. P. (2003). Jurors- evaluations of expert testimony: Judging the messenger and the message. Law and Social Inquiry, 28, 441-482.
[5] Langolis, J. A., Ruthland-Brown, W., & Wald, M. M. (2006). The epidemiology and impact of traumatic brain injury. The Journal of Head Trauma Rehabilitation, 21, 375-378.
[6] McLellan, T., Bishop, A., & McKinlay, A. (2010). Community attitudes toward individuals with traumatic brain injury. Journal of International Neuropsychological Society, 16, 705-710.
[7] McQuiston-Surret, D., & Saks, M. J. (2005). The testimony of forensic identification science: What expert witnesses say and what factfinders hear. Law and Human Behavior, 33, 436-453.
[8] Silver, J. M., & McAllister, T. W. (1997). Forensic issues in the neuropsychiatric evaluation of the patient with mild traumatic brain injury. Journal of Neuropsychiatry, 9, 102-113.
[9] Simpler, A. H., & Parmenter, B. A. (2011). Can neuropsychological assessment inform forensic evaluators- psycholegal opinions? Evidence through a case report. Journal of Forensic Psychology Practice, 11, 351-360.
[10] Slaughter, B., Fann, J. R., & Ehde, D. (2003). Traumatic brain injury in a county jail population: Prevalence, Neuropsychological functioning and Psychiatric disorders. Brain Injury, 17, 731-741.