The MULTIVERSE research project focuses on studying the role of bilingualism in cognitive reserve through three socio-demographically and linguistically diverse cohorts: Chinese Americans, Mexican Americans, and Indians. In this project, the University of California, San Francisco, the National Institute of Mental Health and Neuroscience, and the Health and Aging Brain-Health Disparities study joint effort to assemble one of the largest, multicultural, multilingual, and well-characterized cohort of 2,200 individuals to build a theoretical framework for bilingualism and cognitive reserve.