**Research Interests**

- Psychometrics
- Latent Variable Models
- Multivariate Categorical Data Analysis

**Current Positions**

- Professor, Department of Statistics, University of Illinois at Urbana-Champaign
- Director, MS Program in Statistics, University of Illinois at Urbana-Champaign

**Education**

- BS, Mathematics, University of Illinois at Urbana-Champaign, 1990
- PhD, Statistics, University of Illinois at Urbana-Champaign, 1995