S. Natasha Beretvas, Ph.D.
Program Director, Quantitative Methods
Research Interests and Expertise: Statistical/psychometric modeling with a focus on hierarchical linear modeling/multilevel modeling and meta-analytic procedures.
Tiffany Whittaker, Ph.D.
Research Interests and Expertise: Structural Equation Modeling (SEM), multilevel modeling (MLM), and item response theory (IRT) with a focus on model specification, comparison/selection, and model modification methods.
Hyeon-Ah (Annie) Kang, Ph.D.
Associate Director, Center for Applied Psychometric Research
Research Interests and Expertise: Item response theory, cognitive diagnostic assessment, response time modeling and computerized adaptive testing.
Seung W. Choi, Ph.D.
Director, Center for Applied Psychometric Research
Research Interests and Expertise: Application of classical test theory and item response theory to test and scale development, computerized adaptive testing, and patient-reported outcomes measurement.