Kathleen M. Ziol-Guest is research associate professor in the Department of Applied Statistics, Social Science, and Humanities at New York University’s Steinhardt School of Culture, Education, and Human Development. Ziol-Guest is also the project director for the Early Childhood Meta-Analysis Project (funded by the National Institutes of Health) in the Metropolitan Center for Research on Equity and the Transformation of Schools. She is a policy analyst whose research interests are centered on the demographic characteristics and socioeconomic environments of families as contexts for individual development. Her compilation of work cuts across the multiple domains of family structure and living arrangements; economic well-being, poverty, and mobility; and the health effects of nonhealth policies. She has received grants from the National Science Foundation, the Russell Sage Foundation, and the MacArthur Foundation, and has published her work in Child Development, Social Science, & Medicine, and Proceedings of the National Academy of Sciences. She has been on the editorial board of the Journal of Marriage & Family since 2007. Ziol-Guest received a master of public affairs from the School of Public and Environmental Affairs at Indiana University-Bloomington, her Ph.D. in public policy from the University of Chicago, and was a Robert Wood Johnson Health and Society Scholar at the Harvard School of Public Health.