Zhu, Xiaowen

Clement A. Stone is a professor in the Research Methodology program at the University of Pittsburgh School of Education. He is an expert in psychometrics, including educational and psychological instrument development and validation, item response theory (IRT) models and applications, and Bayesian analysis of IRT models. Also an expert in SAS software, he has used SAS extensively in research utilizing simulation methods, and he instructs graduate students in the use of SAS. He applies IRT in the development and validation of educational, psychological, and behavioral assessments, including a r...