Brief description: BrainTest is based on the Self-administered Gerocognitive Examination (SAGE), a brief cognitive assessment for mild cognitive impairment (MCI) and early dementia, created by Dr. Douglas Scharre, Professor of Clinical Neurology and Psychiatry at The Ohio State University's Wexner Medical Center in Columbus, Ohio. SAGE was validated in the setting of mild cognitive impairment, and has subsequently been adopted in numerous clinical settings.