Although Black communities are plagued by health disparities, science has continued to center white populations in research. While research into ethnic and racial disparities studies has identified a number of population differences for disease risk factors, it is also important to understand within group heterogeneity in order to elucidate mechanisms underlying cognitive decline. Understanding the intersection of risk factors that drive cognitive decline and dementia in the Black population is critical to accurately assess, predict, and develop interventions for cognitive health. Thus, my goal is understanding the intersection and contributions of genetics and social/environmental factors to cognitive decline and AD. Research will utilize a number of techniques including genetic, neuroimaging, neuropsychological assessments, social and environmental factors, and fluid based biomarkers.