Inclusion Criteria:  For Mild Alzheimer Disease (AD) dementia  meets probable AD dementia National Institute on Aging and Alzheimer's Association (NIA-AA) criteria Mini-Mental State Examination (MMSE) 20-27 performance on delayed recall and recognition memory worse than 1.5 standard deviation (SD) for age and education performance on delayed recall and recognition memory worse than 1.5 SD for age & education in at least one other cognitive domain (e.g., language, executive functioning) based on other tests in our neuropsychological test battery. Dr. Turk and Dr. Budson will confirm all mild AD dementia diagnoses  For Mild cognitive impairment (MCI)  meets MCI due to AD NIA-AA criteria MMSE > 23 performance on delayed recall and recognition memory worse than 1.0 SD for age & education adjusted norms Dr. Turk and Dr. Budson will confirm all MCI due to AD diagnoses  Exclusion Criteria:  A clinically significant problem of any of the following conditions:  depression heavy alcohol or drug use cerebrovascular disease traumatic brain damage a different degenerative disease (e.g., fronto-temporal dementia, Parkinson's disease) any medical condition whose severity could significantly impair cognition (e.g., organ failure) Unable to understand the consent form