Professor of Statistics

Ph.D. in Statistics, University of Illinois at Urbana-Champaign, 1995

Personal Website

Research Interests

• Multivariate latent variable methodology for complex statistical surveys and instruments - with applications to assessment of health quality of life and item response theory in educational and psychological testing

Honors and Appointments

• Associate Editor, Statistics and Its Interface (2007-)
• Associate Editor, Psychometrika (2003-)
• Assistant Professor and Associate Professor, Biostatistics and Medical Informatics, University of Wisconsin-Madison (1995-2001)
• Co-director of Educational and Psychological Measurement Lab

Selected Publications

• Henson R, Roussos L, Douglas J, He X.   Cognitive diagnostic attribute level indices. Applied Psychological Measurement, In press, 2007.
• Xu X, Douglas J, Anderson S.  Computerized adaptive testing under nonparametric IRT models. Psychometrika, 71:121-137, 2006.
• Henson R, Douglas J, Anderson S.  Test construction for cognitive diagnosis. Applied Psychological Measurement, 29:262-277, 2006.
• de la Torre J, Douglas J. Higher-Order latent trait models for cognitive diagnosis. Psychometrika, 69:333-353, 2004.
• Wang C, Douglas J, Anderson S.  Item response models for jointly analyzing quality of life and survival. Statistics in Medicine, 21:129-142, 2002.
• Douglas J, Cohen A. Nonparametric ICC estimation to assess fit of parametric models.  Applied Psychological Measurement, 25:234-243, 2001.
• Douglas J.  Asymptotic identifiability of nonparametric items response models.  Psychometrika, 66:531-540, 2001.