Inclusion Criteria:  Cognitively normal must have no cognitive concerns, be independent in all activities of daily living, be medically stable and willing to participate in the study, and fluent in English Mild cognitive impairment must have self or informant concern of cognitive decline, impairment in one or more cognitive domains on objective tests when possible, preservation of independence in activities of daily living, be medically stable and willing to participate in the study, and fluent in English Mild dementia must exhibit cognitive and/or behavioral symptoms that represent a decline from prior levels of functioning, interfere with the ability to function at work or in usual activities, are not explained by delirium or a major psychiatric disorder, and are evident in at least two cognitive/behavioral domains  Exclusion Criteria:  Cognitively normal and mild cognitive impairment cannot have confounding medical or psychiatric conditions that could impact cognition, dementia of any etiology, or active substance abuse that could impact cognition or substance use disorder not in remission for at least 1 year. Dementia cannot have psychiatric conditions that could impact cognition or active substance abuse that could impact cognition or substance use disorder not in remission for at least 1 year.