Broadly, Rosalyn’s research deals with the interpersonal dimensions of ethnicity in diverse cities, with a special focus on social interaction and social networks. With a range of applications, Rosalyn’s work bridges multiple substantive and methodological areas, including social network analysis, sociolinguistics, health disparities, and disparities in STEM participation. She has conducted research in Jamaica, Florida, New York City, and Boston. Rosalyn’s research has been funded by the National Science Foundation, National Institutes of Health, the Ford Foundation, and the Max Planck Institute for Religious and Ethnic Diversity. Sophie Desroches