Dr. Cullum is a Clinical Neuropsychologist who specializes in the assessment of cognitive disorders. He is board certified in Clinical Neuropsychology (ABPP/ABCN) and serves as the Vice Chair and Chief of the Division of Psychology in the Department of Psychiatry, where he holds the Pamela Blumenthal Distinguished Professorship in Clinical Psychology. He is the PI of the Concussion-Texas (ConTex) studies, serves as the Scientific Director of the Texas Alzheimer's Research and Care Consortium (TARCC), and is the Clinical Core leader in the UTSW Alzheimer's Disease Center. He is a past president of the Society for Clinical Neuropsychology and the National Academy of Neuropsychology and the incoming President of the Sports Neuropsychology Society. He is actively involved in research, teaching, and clinical practice in neuropsychology. His research includes investigations into short- and long-term effects of concussion and early detection and differential diagnosis of neurodegenerative conditions of aging. His clinical research lab is also involved in cognitive test development and in telemedicine applications of neuropsychology.