Contact Information
725 S. Wright St.
M/C 374
Champaign, IL 61820
Research Areas
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
Wayman, E. A., Culpepper, S. A., Douglas, J., & Bowers, J. (Accepted/In press). A Restricted Latent Class Hidden Markov Model for Polytomous Responses, Polytomous Attributes, and Covariates: Identifiability and Application. Journal of Educational and Behavioral Statistics. 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
Wayman, E. A., Culpepper, S. A., Douglas, J., & Bowers, J. (2025). A restricted latent class model with polytomous attributes and respondent-level covariates. Behaviormetrika. Advance online publication. https://doi.org/10.1007/s41237-025-00271-8