Educational Psychology

Quantitative Method in Educaiton

Links to Main Sections - Go Main || QME || STAT || MATH ||

People

Research Interests, Projects and Assistances

• Longitudinal Data Analysis :
  • Fractional Polynomial Model (With Dr. Long) - Generalized Additive Models (Trevor Hastie) ||
  • Testing variance components (Preli Oral Exam) - Geert Molenberghs || Geert Verbeke || Parametric Bootstrap (Geyer) || STAR Project ||
  • Model Building (Ph.D. Dissertation) - Raftery - Bayes Model Averaging, Hypothesis Testing and Model Selection ||
  • Programs : SAS, R, SPSS, S Plus
  • Resources : Lecture notes of Don Hedeker ||
• Variable Selection Criteria :
  • Variable selection criterion based on bias and variance (with Dr. Chatterjee)
  • Bootstrap methods || Simulation ||
  • Programs : R
• Item Response Theory :
  • IRT with Bayesian estimation (with Dong Gi Seo)
  • Dimensional structure in CAOS4 || DIF analyses in CAOS4 ||
  • Programs : R,WinBUGS,Bilog-MG and Testfact
  • Resources : Lecture notes of David Thissen (C++ and R) ||
• Computerized Adaptive Test :
  • Termination Criteria (with Namkeol Kim)
  • Programs : PostSIM
• Quality Compensation & MCA II :
  • Propensity Score (with Saahoon Hong, PhD and Dr. Bart)
  • MCAII (Minnesota Dept. of Education) || Mean Growth Curve Modeling for MCAII (Summer, 08 to Current) ||
  • Programs: SAS, SPSS, HLM
• Primary Researcher : Dr. Arthur Reynolds (Institute of Child Developments)
  • Research title (or topic) : Chicago Longitudinal Study || Mean Growth Curve Models for Achievement Scores ||
  • Periods : Summer, 2007 ~ Spring, 2008
  • Programs: SAS, R, SPSS
• Primary Investigator : Dr. Joan Garfield (Educational Psychology)
  • Research title (or topic) : CATALST || Dimensional Structure || IRT DIF and DTF ||
  • Periods : Summer, 2008 ~
  • Programs : R, Bilog-MG, HLM, TESTFACT

Presentations and Publications

• AERA Section H - Paper presentation (April, 2009) with Saahoon Hong, PhD and William Bart, PhD
  • A Preliminary Longitudinal Study of Performance Pay for Teachers: Examining Elementary School Performance in Mathematics and Reading
• CEHD Research Day - Poster presentation (March, 2009) with Namkeol Kim
  • Effects of Different Termination Criteria on Classification Consistency in CAT
• Psychological Society - Paper presentation (July 1, 2008) with Dong Gi Seo
  • Efficiency of Bayesian Estimation with Gibbs Sampling in IRT models
• AERA Section H - Paper discussion (March 26, 2008) with Saahoon Hong, PhD
  • The Effect of Quality Compensation for Teaching on Student Performance in math and reading
• Maine/Quebec Number Theory Conference - Paper Presentation (Oct. 2000)
  • Identities for Multiple Zeta Values

• Jeffrey D. Long and Jihoon Ryoo (in press), "Using Fractional Polynomials to Model Nonlinear Trends in Longitudinal Data", Brithish Journal of Mathematical and Statistical Psychology
• D. Bowman, D.M. Bradley, and Jihoon Ryoo (2003), "Some multi-set inclusions associated with shuffle convolutions and multiple zeta values", European Journal of Combinatorics, 24 (1), 121-127
• Jihoon Ryoo, “Identities for multiple zeta values using the shuffle operation”, Master’s Thesis, Univ. of Maine, May 2001

Study Resources and their Information (Journals, Seminars, books etc.)

• Research Design : Research Methods - Knowledge Base ||
• Journals : Psychometrika || JASA || TAS || AnnStat || Psychological Methods || amstat || Journal of Educational Psychology || Applied Psychological Measurement || Journal of Educational Measurement ||
• Websites :UMN - Libraries || Brian Habing - Statistical methods, Nonparameteric and IRT ||
• R : Nabble R Forum || R Wiki || lme4 ||
• Department of Education : U.S. Department of Education || Minnesotat Department of Education ||

• Longitudinal Data Analysis - LMM : Course Note (by Dr. Long, Spring 07) - Final project (Fractional Polynomial MMs) || Linear Mixed Models for Longitudinal Data (Verbeke and Molenberghs) || Models for discrete longitudinal data (Verbeke, Molenberghs) ||Analysis of Longitudinal data (Diggle, Heagerty, Liang, and Zeger) || Applied longitudinal analysis (Fitzmaurice, Laird, Ware) || Mixed-Effects Models in S and S-PLUS (Pinheiro and Bates) ||
• Hierachical Linear Models - HLM : Course Package (by Dr. Harwell, Summer 07) - Final project (MCAII) || Hierarchical Linear Models (Raudenbush and Bryk) ||
• Latent Variables - SEM/FA : 2 Weeks presentation of Multivariate Analysis (with Dong Gi Seo, Summer 07) || Course Note (by Dr. Wall, Fall 07) || Principles and practices of SEM (Rex B. Kline) || Analyzing Multivariate Data (Lattin, Carroll, and Green) || Making sense of factor analysis (Pett, Lackey, and Sullivan) || Generalized Latent Variable Modeling (Skrondal and Rabe-Hesketh) ||
• Item Response Theory - IRT : 2 weeks presentation (by Dong Gi Seo, Summer 07) || Item Response Theory For Psychologists (Embretson and Reise ) || 6 weeks IRT Estimation seminar - Baker and Kim (with Dong Gi Seo, Summer 08) ||
• Power Analysis - Semester long study about Optimal Design || UCLA seminar resources (Introduction; Intermediate; Advanced) ||
• Bayesian - Bayesian Methods for Data Analysis by Carlin and Louis (Sep. 08 ~ ) || Brad's class websites ||

Course Works in QME (Fall, 2006 to Spring, 2008):

• Statistics courses and their textbooks:
• Theory of Statistics (Fall, 2006 thru Spring, 2007) - Statistical Inference (Casella and Berger) ||
• Applied Statistical Methods (Fall, 2006 thru Spring, 2007) - Applied Linear Regression (Weisberg) || Extending the Linear Model with R (Faraway) || A first course in the design and analysis of experiments (Ohelert) || Mixed-Effects Models in S and S-PLUS (Pinheiro and Bates) ||
• Statistical Analysis of Longitudinal Data (Spring, 2007) - Applied longitudinal analysis (Fitzmaurice, Laird, Ware) || Linear mixed models for longitudinal data (Verbeke, Molenberghs) ||
• Hierarchical Linear Models (Summer, 2007) - Hierarchical Linear Models (Raudenbush and Bryk) ||
• Advanced Multiple Regression Analysis (Fall, 2007) - Applied Linear Statistical Models (Kutner) ||
• Latent Variables (Fall, 2007) - Making Sense of Factor Analysis || Principles and practice of Structural Equation Modeling || Generalized Latent Variable Modeling - Multilevel, Longitudinal, and Structural Equation Models ||
• Nonparametric Statistics in Education (Spring, 2008) - Course Package || An Introduction to the Bootstrap (Efron and Tibshirani) ||

• Measurement courses and their textbooks:
• Principles of Educational and Psychological Measurement (Fall, 2007)
• Advanced Measurement (Spring, 2008)

• Course Works :
• EPsy 5244 (Fall, 2006) || EPsy 5101 (Fall, 2006) || Stat 8101 (Fall, 2006) || Stat 8051 (Fall, 2006) ||
• EPsy 5271 (Spring, 2007) || EPsy 8282 (Spring, 2007) || Stat 8102 (Spring, 2007) || Stat 8052 (Spring, 2007) ||
• EPsy 5135 (Summer, 2007) || EPsy 5243 (Summer, 2007) || EPsy 5991 (Summer, 2007) || EPsy 8993 (Summer, 2007) ||
• EPsy 5221 (Fall, 2007) || EPsy 5247 (Fall, 2007) || EPsy 8215 (Fall, 2007) || EPsy 8264 (Fall, 2007) || PubH 7435 (Fall, 2007) ||
• EPsy 8222 (Spring, 2008) || EPsy 8271 (Spring, 2008) - Study || EPsy8290 (Spring, 2008)-Equating || EPsy 8905 (Spring, 2008) || EPsy 8272 (Spring, 2008) - Study ||

Teaching and Research Assistances:

• Consulting : ORC || Periods: Summer, 2008 ~ ||
• Research assistance : CATALST || Periods: Summer, 2008 ~ ||
• Spring, 2009 - EPsy 5261 (Introducotry Statistical Methods) : Lecturer
• Fall, 2008 - EPsy 8282 (Longitudinal Data Analysis) : Teaching Assistant (Lecturer - Prof. Jeff Long)
• Fall, 2008 - EPsy 5261 (Introductory Statistical Methods) : Teaching Assistant (Lecturer - Michelle Everson, PhD)
• Research assistance : Chicago Longitudinal Study || Periods: Summer, 2007 ~ Spring, 2008 ||
• Spring, 2007 - EPsy 8261 (Statistical Methods I) : Teaching Assistant (Lecturer - Prof. Bob DelMas)
• Fall, 2006 - EPsy 8261(Statistical Methods I) :Teaching Assistant (Lecturer - Prof. Jeff Long)
• Summer, 2001 and Summer, 2006 : Lecturer for Calculus
• Fall, 2001 ~ Spring, 2006 : Teaching Assistant at the School of Mathematics (Univ. of Minnesota)
• Fall, 1999 ~ Spring, 2001 : Teaching Assistant at Mathematics and Statistics Department (Univ. of Maine)

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The contents of this page have not been reviewed or approved by the University of Minnesota.