Personal profile
Education
PhD, Educational Psychology, University of Minnesota, 2006
BS, Economics, Bowling Green State University, 2001
Research Interests
Psychometric models
Latent class models
Large-scale testing and assessment
Statistical computing
Office Address
115 Illini Hall
725 S. Wright St.
M/C 374
Champaign, IL 61820
Office Phone
Fingerprint
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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A Restricted Latent Class Hidden Markov Model for Polytomous Responses, Polytomous Attributes, and Covariates: Identifiability and Application
Wayman, E. A., Culpepper, S. A., Douglas, J. & Bowers, J., 2026, (Accepted/In press) In: Journal of Educational and Behavioral Statistics.Research output: Contribution to journal › Article › peer-review
Open Access -
A restricted latent class model with polytomous attributes and respondent-level covariates
Wayman, E. A., Culpepper, S. A., Douglas, J. & Bowers, J., Oct 15 2025, (E-pub ahead of print) In: Behaviormetrika.Research output: Contribution to journal › Article › peer-review
Open Access -
A sparse latent class model incorporating response times
He, S., Culpepper, S. A. & Douglas, J. A., Nov 2025, In: British Journal of Mathematical and Statistical Psychology. 78, 3, p. 757-784 28 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Designing Learning Intervention Studies: Identifiability of Heterogeneous Hidden Markov Models
Liu, Y. & Culpepper, S., Sep 2025, In: Psychometrika. 90, 4, p. 1258-1283 26 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Domain Latent Class Models
Bowers, J. & Culpepper, S., Dec 2025, In: Bayesian Analysis. 20, 4, p. 1429-1456 28 p.Research output: Contribution to journal › Article › peer-review
Open Access
Press/Media
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Study: People expect others to mirror their own selfishness, generosity
Dolcos, F., Culpepper, S. A. & Dolcos, S. M.
8/7/23
1 Media contribution
Press/Media: Research