Xueming (Sylvia) Li, EdD
Xueming (Sylvia) Li focuses on psychometric issues related to MAP Growth. Her research interests include computer-based testing, applications of IRT, test validity, cross-cultural assessment, and test score linking and equating. Prior to joining NWEA in 2015, she received a doctoral degree in research, educational measurement, and psychometrics from the University of Massachusetts Amherst.
Publications by Xueming (Sylvia) Li
This study examined the measurement stability of a set of Rasch measurement scales that have been in place for almost 40 years.
Using data from Northwest Evaluation Association’s Measures of Academic Progress assessment, reading achievement was analyzed from 224 students with visual impairments in grades 3–10, in four states over an eight-year time period.
This simulation study examines the measurement precision, item exposure rates, and the depth of the MAP Growth item pools under various grade-level restrictions.
This document presents the results of a calibration study conducted to investigate the possible consequences of replacing the English MAP Growth Math item parameters with the Spanish math item parameters from calibrating Spanish items using empirical data.