Mary Ann Simpson, PhD
Manager, Psychometric Solutions
Mary Ann Simpson is the lead psychometrician for MAP Reading Fluency. Her areas of expertise include 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. Prior to joining NWEA in 2018, Dr. Simpson worked in K–12 psychometrics for nearly 15 years. She holds a master’s degree in developmental psychology and a PhD in educational measurement from the University of North Carolina at Greensboro.