Mary Ann Simpson, PhD
Senior Research Scientist
Dr. Mary Ann Simpson has worked in K–12 psychometrics for nearly 15 years. Her areas of expertise include item response theory (IRT), linking and equating, Bayesian statistics, growth modeling, and factor analysis. Her current research involves the design of cognitive models for automatic item generation and the psychometric properties of such items. She holds a Masters in Developmental Psychology and a Ph.D. in Educational Measurement from the University of North Carolina at Greensboro.