James Youngjohn PhD

James Youngjohn, PhD, is a clinical neuropsychologist providing comprehensive neuropsychological assessment for adolescents and adults. He is board certified in Clinical Neuropsychology through the American Board of Professional Psychology and is a Fellow of the National Academy of Neuropsychology. Dr. Youngjohn has practiced in Arizona for more than 25 years and serves as President/CEO and Director of Neuropsychology Clinic, PC. Dr. Youngjohn’s evaluations use standardized methods to assess cognitive functioning, including areas such as memory, attention, processing speed, language, and executive functioning, along with emotional and behavioral factors that can influence performance. His clinical work is designed to support diagnostic clarification and practical treatment planning. In addition to clinical practice, Dr. Youngjohn holds an adjunct faculty appointment at Arizona State University, where he mentors and helps train doctoral students in clinical psychology. He has authored more than 50 peer-reviewed articles and contributes to the field as a reviewer for scientific and professional journals. Dr. Youngjohn also provides forensic neuropsychological assessment and has served as an expert in legal settings, including court proceedings.