Christopher Randolph, PhD, ABPP-CN
Board-certified clinical neuropsychologist, Professor of Neurology, and Director of the Neuropsychology Service at Loyola University Medical Center in Chicago
He has extensive experience in clinical neuropsychological test development, translation, and validation, and is the author of the most widely-used brief neurocognitive battery in the world (Repeatable Battery for the Assessment of Neuropsychological Status- RBANS).




Posit Science programs and technology have been subjected to more rigorous clinical trials with researchers at more universities than any other cognitive training program in the world. And the results are impressive.