My research has focused primarily on improving large scale educational assessments. I am a practitioner turned professor. I spent nine productive years in the testing industry before moving to academia in 2001. From 1992 to 1999, I was a Research Scientist at Educational Testing Service (ETS). From 1999 to 2001, I held the position of Senior Psychometrician and Director of Computerized Testing Technological Research at the prestigious National Board of Medical Examiners (NBME). Today, one main challenge in assessment is to develop theories and methods for the wide-ranging implementation of computerized assessment. Most recently, my work has been concentrated on developing item selection methods for computerized adaptive testing. I tackle research problems that emerge from real world applications. For instance, one problem was to identify a design flaw in the computerized testing system that failed to generate reliable scores for thousands test takers from 2000 to 2002. Along with Zhiliang Ying at Columbia University, I proposed a theory, and presented both analytical and empirical evidence, to support our hypothesis (Chang & Ying 2008). This research effort has been recognized by the 2008 Annual Award of National Council on Measurement in Education (NCME).
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College of Education
Quantitative and Evaluative Research Methodologies
http://education.illinois.edu/edpsy/frp/hhchang
Faculty Research Profiles: Hua-hua Chang
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Professor
Quantitative and Evaluative Research Methodologies
Educational Psychology
Educational Psychology
236B Education Building
1310 S. 6th St. MC 708
Champaign, IL 61820USA
Professor, Psychology
Psychology
430 Psychology Building
603 E. Daniel MC 716
Champaign, IL 61820
Section Links
- Research Biography
- Degrees
- Key Professional Appointments
- Activities & Honors
- Selected Publications
- Selected Links
Research Biography
Degrees
- Ph.D., Statistics, University of Illinois at Urbana-Champaign, 1992
- M.S., Statistics, University of Illinois at Urbana-Champaign, 1988
- Diploma, Mathematics, East China Normal University, Shanghai, China, 1980
Key Professional Appointments
- Professor, Educatiional Psychology, University of Illinois at Urbana-Champaign, 2009--
- Professor, Psychology, University of Illinois at Urbana-Champaign, 2009--
- Professor (0-time), Statistics, University of Illinois at Urbana-Champaign, 2009--
- Associate Professor, Psychology, University of Illinois at Urbana-Champaign, 2005-2009
- Associate Professor (0-time), Statistics, University of Illinois at Urbana-Champaign, 2005-2009
- Associate Professor, Educational Pyschology, University of Illinois at Urbana-Champaign, 2005-2009
- Associate Professor, Educational Pyschology, University of Texas, Austin, 2001-2005
- Senior Psychometrician and Director, Computerized Testing Technological Research, National Board of Medical Examiners, Philadelphia, PA, 1999-2001
- Research Scientist, Division of Statistics and Psychometrics Research, Educational Testing Service, Princeton, NJ, 1992-1999
- Associate Professor, Educational Psychology, The Chinese University of Hong Kong, 1997-1998
Activities & Honors
- Spring 2008 UIUC Incomplete List of Teachers Ranked as Excellent by Their Students, University of Illinois at Urbana-Champaign, 2008
- The 2008 Annual Award of NCME, National Council on Measurement in Education, 2008
- Advisory Board Member, National Medical Examination Center of China, 2006- present
- Editorial Board Member, Educational Measurement Issues and practice, 2006- present
- Associate Editor, The American Statistician, 2005- present
- Editorial Board Member, Applied Psychological Measurement, 2003- present
- Editorial Board Member, Journal of Educational and Behavioral Statistics, 2003- present
- NIMH Special Interest Panel Member (served four times since 2001), NIMH, 2001-2005
Selected Publications
- Chang, H. (2007). Psychometrics, In International Encyclopedia of the Social Sciences, 2nd addition (Vol 6, 587-590). MacMillan Library Reference USA, Detroit, MI.
- Chang, H., & Ying, Z. (2006). Computerized adaptive testing. In N. Salkind (Ed.), Encyclopedia of measurement and statistics (pp. 170-174). Thousand Oaks, CA: Sage
- Chang, H. (2004). Understanding computerized adaptive testing: From Rabins-Moron to Lord, and beyond. In Kaplan D. (Ed.), The sage handbook of quantitative methods for the social sciences (pp. 117-133), Sage Publications.
- Chang, H. & Zhang, J. (2002). Hypergeometric family and item overlap rates in computerized adaptive testing. Psychometrika 67, 387-398.
- Hau, K. & Chang, H. (2001). Item selection in computerized adaptive testing: should more discriminating items be used first? Journal of Educational Measurement 38, 249-266.