Contact Information
725 S. Wright St.
M/C 374
Champaign, IL 61820
Research Interests
- Psychometric models
- Latent class models
- Large-scale testing and assessment
- Statistical computing
Education
- PhD, Educational Psychology, University of Minnesota, 2006
- BS, Economics, Bowling Green State University, 2001
Additional Campus Affiliations
Professor, Statistics
Professor, Beckman Institute for Advanced Science and Technology
Professor, Psychology
Professor, Educational Psychology
External Links
Recent Publications
Culpepper, S. A., & Park, T. (2026). A Gibbs sampler for the LKJ Prior on correlation matrices. Statistics and Computing, 36(3), Article 127. https://doi.org/10.1007/s11222-026-10879-9
Culpepper, S., Park, T. H., Man, A., & Bowers, J. (2026). Multivariate Penalized-Complexity-Like Priors for Exploratory Factor Analysis. Journal of Educational and Behavioral Statistics. Advance online publication. https://doi.org/10.3102/10769986261472508
Le, T., Culpepper, S., & Douglas, J. (2026). Longitudinal Designs for Diagnostic Models: Identification and Estimation. Psychometrika. Advance online publication. https://doi.org/10.1017/psy.2026.10128
Wayman, E. A., Culpepper, S. A., Douglas, J., & Bowers, J. (2026). A Restricted Latent Class Hidden Markov Model for Polytomous Responses, Polytomous Attributes, and Covariates: Identifiability and Application. Journal of Educational and Behavioral Statistics. Advance online publication. https://doi.org/10.3102/10769986251415569
Wayman, E. A., Culpepper, S. A., Douglas, J., & Bowers, J. (2026). A restricted latent class model with polytomous attributes and respondent-level covariates. Behaviormetrika, 53(2), 833-861. https://doi.org/10.1007/s41237-025-00271-8