She is also core faculty in the CFAR Sociobehavioral Core and a faculty affiliate in the Center for Studies in Demography and Ecology, and thus brings a unique demographic perspective to social and behavioral HIV research. Her specific research interests are in the areas of migration and residential mobility, social and structural determinants of HIV, mathematical modeling, and social network analysis. Dr. Cassels has published manuscripts in AIDS, AIDS and Behavior, Current Opinion in HIV and AIDS, and Sexually Transmitted Diseases on topics including HIV modeling in the social and behavioral sciences and social network analysis. She has published epidemic modeling papers using both compartmental models (e.g. HIV among men who have sex with men in the U.S.) as well as network models (e.g. concurrency and HIV among young adults in Zimbabwe).