I use neuroimaging and behavioral techniques to understand positive (e.g., exercise) and negative (e.g., depression) modifiers of brain health in older adults, including health disparities in age-related cognitive and mood disorders. My research primarily centered==s on 1) cognitive and neuroimaging studies of late-life depressive disorders, 2) exercise interventions to improve mood and brain function in older adults, and 3) health disparities in age-related cognitive and mood disorders.