Mark W. Lipsey, PhD, is a Research Professor in the Peabody Research Institute at Vanderbilt University. His research and teaching interests are in the areas of public policy, program evaluation, social intervention, field research methodology, and research synthesis, with particular emphasis on programs for children and youth. He is co-author of the 7th Edition of Rossi et al., Evaluation: A Systematic Approach, a leading textbook in evaluation, and has consulted widely (e.g., in the U.S., Europe, India, and Africa). He is a former editor-in-chief of New Directions for Program Evaluation (a journal of the American Evaluation Association) and has served on the editorial boards of the American Journal of Evaluation, Evaluation Review, Evaluation Studies Review Annual, and Evaluation and Program Planning. His work has been recognized with awards from the American Evaluation Association, the Society for Prevention Research, the American Society of Criminology, and the Campbell Collaboration, among others. Dr. Lipsey has taught regularly in The Evaluators’ Institute since its inception in 1996.