Ji Hoon Ryoo


I am a full Professor of Education at the College of Educational Sciences of Yonsei University since March of 2023. After receiving my Ph.D. in quantitative methods from the University of Minnesota in June of 2010, I worked at the University of Nebraska-Lincoln as a postdoctoral research associate from July of 2010 to July of 2012.

I also worked at Curry School of Education at the University of Virginia as an Assistant Professor at the Research, Statistics, and Evaluation program from August of 2012 to July of 2018.

From August of 2018 to January of 2020, I worked as an Associate Professor of Research Pediatrics at the Keck School of Medicine of the University of Southern California since August of 2018, and also serve as the director of the Biostatistics Core of the Children’s Hospital Los Angeles. Since February 2020, I worked as an Associate Professor of Education at Yonsei University, South Korea.

As a quantitative methodologist in Biostatistics and Social/Behavior Sciences, I am primarily interested in improving current quantitative methods and implementing new applications to facilitate the answering of substantive research questions in human sciences. My current research interests include analysis of longitudinal and multilevel data, structural equation modeling, psychometrics, propensity score analysis, and meta-analysis in education, psychology, medicine, nursing, and public health.


Experience

Associate Professor

Pediatrics and Preventive Medicine
Keck School of Medicine
August 2018 – January 2020

Assistant Professor

Research, Statistics and Evaluation Program
Curry School of Education
August 2012 – July 2018

Postdoctoral Research Associate

Statistics and Research Methodology Unit
Nebraska Center for Research on Children, Youth, Families, and Schools
July 2010 – July 2012

Adjunct Faculty Member &

Mathematics and Statistics Departments
August 2009 – July 2010

Statistician

Mathematics and Statistics Departments
June 2009 – July 2010

Education

Ph.D. in Quantitative Methods in Education, Educational Psychology

University of Minnesota, Twin Cities, Minnesota
Dissertation: Model Selection with the Linear Mixed Effects Models for Longitudinal Data
Dissertation Advisor: Dr. Jeffrey Long
Dissertation Committee: Dr. Mark Davison, Dr. Michael Harwell, and Dr. Melanie Wall
June 2010

M.S. in Statistics & M.S. in Mathematics

University of Minnesota, Twin Cities, Minnesota
Thesis: New Variable Selection Criteria in Model Selection
Thesis Committee: Dr. Snigdhansu Chatterjee (advisor), Dr. Galin Jones and Dr. Jeffrey Long
June 2010
June 2006

M.A. in Mathematics

University of Maine, Orono, Maine
Thesis: Identities for the Multiple Zeta Values using the Shuffle Operator
Thesis Committee: Dr. David Bradley (advisor), Dr. Henrik Bresinsky and Dr. Chip Snyder
June 2006

B.S. in Mathematics

Kyungpook National University, Daegu, Korea
Minor in Mathematics Education with a teacher’s license
Feburary 1999

© Hyun Suk Ryoo. All rights reserved.