Elizabeth Tipton is an Associate Professor of Statistics and Faculty Fellow at the Institute for Policy Research at Northwestern University. She is an Associate Editor at the Journal of Educational and Behavioral Statistics and is on the Editorial Boards of Psychological Bulletin, Research Synthesis Methods, and Observational Studies. Her work has been funded by the Institute for Education Sciences, the National Science Foundation, the Spencer Foundation and the Raikes Foundation. While a member of the faculty at Teachers College, Columbia University, Elizabeth received Early Career Awards from the American Education Research Association, the Society for Research Synthesis Methods, and the American Psychological Association. She received a Ph.D. in Statistics from Northwestern in 2011.



Larry V. Hedges is Board of Trustees Professor of Statistics at Northwestern University. He is Chair of the Department of Statistics, with appointments as a Faculty Fellow at the Institute for Policy Research, the School of Education & Social Policy the Department of Psychology, and the Weinberg School of Medicine. Larry is an elected member of the National Academy of Education, and a Fellow of the American Academy of Arts & Sciences, the American Statistical Association, the American Psychological Association and the American Educational Research Association. He co-founded the Society for Research on Educational Effectiveness and was honored by the establishment of the annual Hedges Lecture in 2016. Larry received the Yidan Prize for Education Research in 2018. Prior to Northwestern, he was the Stella M. Rowley Distinguished Service Professor at the University of Chicago. He received a Ph.D. from Stanford University in 1980.


Research Associate

Chris Klager is a Research Associate in the STEPP Center where he directs research projects. He is interested in the translation and communication of evidence about educational programs for policymakers and practitioners. He received a Ph.D. in Education Policy from Michigan State University in 2020.


Faculty Affiliates

John Bullock

Associate Professor of Political Science

Areas: Experiments and Causal Inference

James Druckman

Payson S. Wild Professor of Political Science

Areas: Experiments, Surveys, Sampling

Alice Eagly

Emeritus Professor of Psychology

Areas: Meta-analysis

Jessica Hullman

Assistant Professor of Computer Science & Engineering and Medill School of Journalism

Areas: Data visualization, experiments, text-analysis

Mary McGrath

Assistant Professor of Political Science

Areas: Experiments, Meta-Analysis

Blakely McShane

Associate Professor of Marketing

Areas: Meta-analysis, Hierarchical models

Lincoln Quillian

Professor of Sociology

Areas: Meta-analysis, discrete choice, microsimulation, demographic techniques

Bruce Spencer

Professor of Statistics

Areas: Accuracy of statistical measurements, use of statistics for policy, cost-benefit analysis of statistics, sampling methods



Postdoctoral Fellow

Working with IPR statistician and education researcher Larry Hedges, Schauer develops statistical methods for the social and health sciences. His research interests include methods for studying replication, modern advances in meta-analysis, approaches to missing data, and data privacy.

Graduate Students


Graduate Student

Research interests include: meta-analysis, missing data.


Graduate Student

Research interests include: Meta-analysis and generalizability, particularly as applied to global development and social policy.


Graduate Student

Research interests within STEPP include translating information.


Graduate Student

Research interests: Primarily interested in statistical methods for meta-analysis.

Primarily interested in applications of Bayesian methods such as Markov chain Monte Carlo and hierarchical modeling. His main role in the STEPP Center has been to review the methods and procedures of research clearinghouses.