Yiyu Xie headshot

Yiyu Xie, Ph.D.


Yiyu is a psychometrician at Acuity Insights. She collaborates with internal teams on quality assurance of Casper rating. She helps to facilitate and enhance the rating experience for raters through training and various research experiments. She also conducts psychometric analysis of Casper to ensure a reliable and valid assessment.

After completing her doctoral study in Quantitative Methods & Evaluation from UC Berkeley, Yiyu worked for years in K-12 testing, specializing in item calibration and test design with item response theory.