Grants per year
Personal profile
Research Interests
Professor Hedges’ research interests are in the development and application of statistical methods for the social, medical, and biological sciences. One major are of interest is the combination of results across studies to draw general conclusions (meta-analysis). Another major area of research is the design and analysis of social experiments. He works on the development of statistical methods in both of these areas and their application to policy research, particularly education policy. Prof. Hedges also works on the role of uncertainty in cognitive science, trying to understand how human cognition is shaped by the fact that it involves processing of information memory and perception that is inherently uncertain. Finally, he works on the demography of human abilities, including the understanding of differences between social groups and variation of abilities and measured achievement.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Mathematical Methods in Educational Research, PhD, Stanford University
… → 1980
Statistics, MA, Stanford University
… → 1980
Mathematics, BA, University of California at San Diego
… → 1978
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Design Comparable Effect Sizes for Single Case Designs
Institute of Education Sciences
9/1/22 → 8/31/25
Project: Research project
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HDR DSC: Collaborative Research: The Metropolitan Chicago Data Science Corps (MCDC): Learning from Data to Support Communities
van der Lee, S., Birkett, M. A., Goldberg, B. B., Schanzenbach, D. W., Amaral, L. A. N., Amato, K. R., Blomberg Stathopoulos, A. I., Brown, C. H., Drane, D. L., Dunn, J. B., Gray, K. A., Hambleton, J. P., Hammond, K. J., Hedges, L. V., Horton, D. E., Kuyper, A. M., Linna Jr., D. W., Miller, W. M., Packman, A., Pah, A. R., Papachristos, A. V., Phillips II, G., Rogers, J. M., Van Wart, S. J., Voigt, R., Wells, G. & Youn, H.
9/1/21 → 8/31/24
Project: Research project
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What We have Learned in 20 Years of IES Randomized Trials
Institute of Education Sciences
9/1/20 → 8/31/23
Project: Research project
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Multidisciplinary Program in Educational Sciences
Uttal, D. H., Coburn, C. E., Guryan, J. E., Hedges, L. V., Jackson, C. K. & Pinkard, N.
Institute of Education Sciences
9/1/20 → 8/31/25
Project: Research project
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A Summer RCT Institute for Established Researchers
Institute of Education Sciences
9/1/20 → 8/31/23
Project: Research project
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Effect sizes in ANCOVA and difference-in-differences designs
Hedges, L. V., Tipton, E., Zejnullahi, R. & Diaz, K. G., 2023, (Accepted/In press) In: British Journal of Mathematical and Statistical Psychology.Research output: Contribution to journal › Article › peer-review
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Meta-analyzing individual participant data from studies with complex survey designs: A tutorial on using the two-stage approach for data from educational large-scale assessments
Brunner, M., Keller, L., Stallasch, S. E., Kretschmann, J., Hasl, A., Preckel, F., Lüdtke, O. & Hedges, L. V., Jan 2023, In: Research synthesis methods. 14, 1, p. 5-35 31 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
Exploring treatment impact heterogeneity across sites: Challenges and opportunities for early childhood researchers
Sabol, T. J., McCoy, D., Gonzalez, K., Miratrix, L., Hedges, L., Spybrook, J. K. & Weiland, C., Jan 1 2022, In: Early Childhood Research Quarterly. 58, p. 14-26 13 p.Research output: Contribution to journal › Article › peer-review
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Pooling Interactions Into Error Terms in Multisite Experiments
Chan, W. & Hedges, L. V., Dec 2022, In: Journal of Educational and Behavioral Statistics. 47, 6, p. 639-665 27 p.Research output: Contribution to journal › Article › peer-review
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Power analysis for single-case designs: Computations for (AB) k designs
Hedges, L. V., Shadish, W. R. & Natesan Batley, P., 2022, (Accepted/In press) In: Behavior Research Methods.Research output: Contribution to journal › Article › peer-review