Inclusion Criteria:  Enrolled in the Stimulation to Improve Memory Study (NCT03875326). Completed PET scan with amyloid and/or tau tracer success. Demonstrates decision-making capacity to engage in PET disclosure, or has a care partner in attendance that demonstrates decision-making capacity for the participant to engage in disclosure If diagnosed with DAT: must have a cognitively intact study partner (i.e., their care partner) If diagnosed with MCI: strongly recommended to have a cognitively intact study partner (i.e., their care partner)  Exclusion Criteria:  Active diagnosis of moderate depression or anxiety without treatment Newly diagnosed neurologic disease (since completion of Stimulation to Improve Memory Study activities)