Xavier Li

Xavier Li is a researcher at Saint Louis University's School for Professional Studies. He holds a Ph.D. in Statistics, Measurement and Evaluation in Education from the University of Missouri (2018). His primary research interests include direction of effect and causality, effect variability, applied measurement, and teacher/school effectiveness.

Recent publications highlight his contributions to causal inference in linear models, mediation analysis, and statistical software implementation. His work spans educational assessment, cluster robust standard errors, and SPSS macro development for advanced statistical techniques.

Scientific contributions include:

• Development of SPSS tools for cluster robust regression and direction dependence analysis
• Methodological research on confounder detection and causal direction testing

He serves as a Review Editor for Frontiers in Psychology and participates in professional organizations like the American Educational Research Association and Association for Psychological Science.