Guanlan Xu
Senior Psychometrician at Cambium Assessment
Iowa City, Iowa, United States
Summary
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Senior🎓
Top SchoolGuanlan Xu is a Senior Psychometrician with nine years of experience specializing in educational and survey data analysis, statistical modeling, and measurement theory. Currently a PhD candidate in psychometrics with a minor in mathematical statistics and completing an MS in biostatistics, she brings deep expertise in IRT, CAT, generalizability theory, SEM, Bayesian methods, and machine learning. Her career spans research and applied roles at Pearson, Cambium Assessment, and the University of Iowa, where she has delivered rigorous analyses under tight deadlines and contributed to testing programs and adaptive assessment design. Technically fluent in R, SAS, Python, Mplus, FlexMIRT, Winsteps, SQL and visualization tools, she translates complex models into actionable insights for stakeholders. Known for a meticulous, efficiency-driven approach, she combines academic rigor (3.90–3.92 GPAs) with practical assessment development experience. Outside routine duties she pursues cross-disciplinary depth—bridging psychometrics and biostatistics—to tackle measurement problems that require both theoretical and applied solutions.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Bachelor's degree at Nanjing UniversityDoctor of Philosophy - PhD, Educational Assessment, Testing, and Measurement, GPA: 3.90/4.00, Doctor of Philosophy - PhD, Educational Assessment, Testing, and Measurement, GPA: 3.90/4.00 at University of Iowa
English, ChineseGithub contributions (5)
guanlanxu/FisheringScoringAlgorithom-Binomal-
Mar 2019 - May 2020
Contributions:5 commits, 4 pushes, 1 branch in 1 year 2 months
guanlanxu/TwitterSearchProject
May 2019 - Oct 2019
Contributions:6 pushes, 3 branches in 5 months
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