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. H. (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
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
Bowers, J., & Culpepper, S. (2025). Domain Latent Class Models. Bayesian Analysis, 20(4), 1429-1456. https://doi.org/10.1214/24-BA1433
He, S., Culpepper, S. A., & Douglas, J. A. (2025). A sparse latent class model incorporating response times. British Journal of Mathematical and Statistical Psychology, 78(3), 757-784. https://doi.org/10.1111/bmsp.12380
Liu, Y., & Culpepper, S. (2025). Designing Learning Intervention Studies: Identifiability of Heterogeneous Hidden Markov Models. Psychometrika, 90(4), 1258-1283. https://doi.org/10.1017/psy.2025.10024