Xiangyi Liao is a Ph.D. student in Quantitative Methods area in Educational Psychology Department. She received her B.A. in Economics from Southwestern University of Finance and Economics, and M.A. in Economics of Education from Peking University. She is currently working with Dr. Daniel Bolt. Her research interests are item response theory (IRT), test equating and linking. She is also interested in multilevel modeling and longitudinal data analysis.