Matthew J. Holcomb, PhD
Dr. Matthew J. Holcomb is a licensed clinical neuropsychologist specializing in both clinical and forensic neuropsychological assessment, holding active licenses in Louisiana (Louisiana State Board of Examiners of Psychologists #1310) and Mississippi (Mississippi Board of Psychology #55 968), as well as an Interjurisdictional Practice Certificate (IPC #20824) from the Association of State and Provincial Psychology Boards (ASPPB). He provides Independent Medical Examinations (IMEs), forensic neuropsychological evaluations, and expert consultation for civil, criminal, and disability matters. Dr. Holcomb maintains regular clinical and forensic hours in Metairie, Louisiana, and is available to travel for evaluations throughout Louisiana and nationally.
Dr. Holcomb earned his Ph.D. in School Psychology with a specialization in Clinical Neuropsychology from Ball State University. He completed his doctoral internship in Neuropsychology at the London Health Sciences Centre and a two-year postdoctoral fellowship in pediatric neuropsychology at Dartmouth Medical School. His training and professional experience encompass a wide range of neurological, psychiatric, and medical conditions, including traumatic brain injury, concussion, epilepsy, cancer, trauma and mood disorders, attention-deficit/hyperactivity disorder, autism spectrum disorder, and neurodegenerative diseases. His clinical practice serves individuals across the lifespan.
In his forensic practice, Dr. Holcomb is experienced in conducting IMEs, capacity and competency evaluations, disability and workers’ compensation assessments, and expert witness testimony. He is committed to providing objective, evidence-based evaluations and clear, comprehensive reports for legal and insurance-related matters.
D- Holcomb is actively engaged in research and continuing education, with a focus on performance and symptom validity assessment, pediatric neuropsychology, and the intersection of neuropsychology and the law. He has published extensively in peer-reviewed journals, contributed to book chapters, and presented his work at national and international conferences. He is a member of the International Neuropsychological Society (INS), National Academy of Neuropsychology (NAN), and Louisiana Psychological Association (LPA).
Dr. Holcomb currently serves as Chairman of the Louisiana State Board of Examiners of Psychologists, where he plays a key role in the regulation and oversight of psychological practice statewide. In this capacity, he is actively involved in the development and enforcement of ethical and professional standards, licensure processes, and continuing education requirements for psychologists. His leadership on the Board reflects his commitment to the integrity of the profession and the protection of public welfare, and he regularly collaborates with state agencies, professional organizations, and legislative bodies to advance the practice of psychology in Louisiana.
Representative Publications:
• Holcomb, M. J. (2018). Pediatric performance validity testing: State of the field and current research. Journal of Pediatric Neuropsychology, 4(3), 83-85.
• Holcomb, M., Pyne, S., Cutler, L., Oikle, D. A., & Erdodi, L. A. (2023). Take their word for it: The inventory of problems provides valuable information on both symptom and performance validity. Journal of Personality Assessment, 105(4), 520-530.
• Holcomb, M. J., Roth, R. M., Tyson, B. T., & Erdodi, L. A. (2022). Critical item (CR) analysis expands the classification accuracy of performance validity tests based on the forced choice paradigm—Replicating previously introduced CR cutoffs within the Word Choice Test. Neuropsychology, 36(7), 683.
Representative Presentations:
• Alsop, M., Holcomb, M. J., Erdodi, L. (2023). The Impact of Translators on Behavioral Questionnaire and Psychological Measures. 5th International Conference on Symptom Validity, Polignano a’ Mare, Italy.
• The Role of Sleep in Recovery (Spring, 2025). Judges and Lawyers Assistance Program (JLAP) Camp and Conference, Loranger, LA.
• Mental and Behavioral Health (Fall, 2026). New Orleans Regional Leadership Institute (NORLI), Ochsner Medical Center, New Orleans, LA.
Dr. Holcomb remains dedicated to advancing the field of neuropsychology through research, education, and the highest standards of forensic and clinical practice. For inquiries regarding forensic evaluations, Independent Medical Examinations, conference presentations, or educational talks, Dr. Holcomb can be reached at (504) 780-1702 or [email protected].
Publications
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