Introduction: Fred Wulczyn is a Senior Research Fellow at Chapin Hall at the University of Chicago and the Director of the Center for State Child Welfare Data. The work of the Data Center is organized around the use of research evidence in public and private child welfare agencies. A core asset of the Data Center is the Multistate Foster Care Data Archive, which for more than 25 years has been an important source of research evidence used by public and private child welfare agencies to manage their programs. The Data Center provides support to more than 20 states across the US and touches broadly on the problem of increasing research evidence use: building opportunity, creating capacity, and increasing motivation. Fred Wulczyn’s work has focused on how states respond to children who are unable to live at home. He brings a multidisciplinary perspective to this work, drawing inspiration from disciplines such as mathematics, population biology, human development, sociology, system dynamics, and social work. His contributions to research evidence use focuses on the evidence needed to operate complex systems. In addition, his current work on human capital formation in New York City addresses the way policymakers think about child well-being and public investment in children. Fred Wulczyn received a PhD from the School of Social Service Administration at the University of Chicago, a Master of Social Work from Marywood University, and a Bachelor of Science in Psychology and Sociology from Juniata College.