Julia H. Littell is a Professor at the Graduate School of Social Work and Social Research at Bryn Mawr College (USA), where she teaches courses on human behavior, child welfare policy and practice, research methodology, and research synthesis. She earned her MA and PhD from the University of Chicago. Her scholarly work focuses on home- and community-based services for children and families, methods of research synthesis, and the uses and misuses of research in policy and practice. She has conducted field experiments, secondary analysis of data, qualitative research, systematic reviews, and meta-analyses on effects of complex behavioral and psychosocial interventions for children, youth, and families. She is co-author of Systematic Reviews and Meta-analysis (Oxford University Press), Putting Families First: An Experiment in Family Preservation (Aldine de Gruyter) and more than 50 journal articles and book chapters. Professor Littell received the Pro Humanitate Literary Award in 2006 and again in 2009 for her articles on research synthesis and evidence-based practice. She received a lifetime achievement award from the Society for Research Synthesis Methodology in 2015. She serves on several editorial boards and is Co-chair and Editor-in-Chief of the international Campbell Collaboration, a nonprofit organization devoted to building a world library of systematic reviews of research to inform policy and practice in education, social welfare, crime and justice, and international development.