Phase 1 Validation Study of the MEVA Cognitive Wellness Platform

Inclusion Criteria

Inclusion Criteria: * Adults aged 55 to 75 years * Community-dwelling (living independently in the community) * English fluency sufficient for informed consent, task instructions, and questionnaires * Able to provide informed consent using teach-back method * Able to use a computer or tablet for simple tap or drag interactions * Functional vision sufficient for on-screen tasks with usual corrective lenses * Functional hearing sufficient for spoken instructions with or without hearing aids * Interest in cognitive wellness and personal well-being * Available for baseline visit and possible retest visit approximately 14 days later * Transportation to study site or ability to participate remotely if permitted by protocol * Assistive devices and accommodations are permitted Exclusion Criteria: * Severe visual impairment preventing completion of digital tasks * Severe motor impairment preventing interaction with tablet or web application * Known diagnosis of moderate or severe dementia, or inability to comprehend consent and task instructions * Current participation in another cognitive training or technology intervention study likely to confound outcomes * Recent hospitalization, emergency room visit, or acute exacerbation of a medical or psychiatric condition within the past 30 days that would impede study participation * Current substance use disorder likely to interfere with study adherence or completion * Recent intensive use of a similar structured cognitive wellness or brain training application