item response theory, psychometrics, test theory, statistical inference, Latent variable modeling

Yang Liu is currently an Associate Professor in the Quantitative Methodology: Measurement and Statistics (QMMS) program of the Department of Human Development and Quantitative Methodology (HDQM) at ÀÖ²¥´«Ã½ of Maryland, College Park. His research focuses on the development of statistical methods for analyzing item response data, as well as the adaptation of measurement modeling to psychological, educational, and health-related research. For more information, please visit .