This study helps find people who might be eligible for Alzheimer's disease (AD) research. *Alzheimer's disease* is a brain condition that affects memory and thinking. This study does not include treatment but checks if you can join future studies with Roche, a healthcare company.

Participation: You need to be able to join a future study, which means being within a certain age range and being open to receiving more information. Not Eligible: You cannot join if you need help with daily tasks, have difficulty seeing or hearing (unless corrected), or have other brain conditions. Serious health problems or past brain injuries also can disqualify you. Having a diagnosis of mild cognitive impairment (MCI) or mild AD with certain test results might exclude you too.

• Duration: This study is a pre-screening process, not a treatment study.
• Visits: No specific visits are required for this screening, as it assesses your eligibility for future studies.
• Risks: No direct risks are involved as it is only a pre-screening assessment.