PhD, Statistics, University of Illinois Urbana-Champaign, 1995

BS, Mathematics, University of Illinois Urbana-Champaign, 1990

Associate Editor, Statistics and Its Interface (2007-)

Associate Editor, Psychometrika (2003-)

Co-director of Educational and Psychological Measurement Lab

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He, S., Culpepper, S. A., & Douglas, J. (2023). A Sparse Latent Class Model for Polytomous Attributes in Cognitive Diagnostic Assessments. In Methodology of Educational Measurement and Assessment (pp. 413-442). (Methodology of Educational Measurement and Assessment). Springer.  link >

Yigit, H. D., & Douglas, J. A. (2021). First-Order Learning Models With the GDINA: Estimation With the EM Algorithm and Applications. Applied Psychological Measurement, 45(3), 143-158.  link >

Benjamin, A. S., Griffin, M. L., & Douglas, J. A. (2019). A nonparametric technique for analysis of state-trace functions. Journal of Mathematical Psychology, 90, 88-99.  link >

Tu, D., Wang, S., Cai, Y., Douglas, J., & Chang, H. H. (2019). Cognitive Diagnostic Models With Attribute Hierarchies: Model Estimation With a Restricted Q-Matrix Design. Applied Psychological Measurement, 43(4), 255-271.  link >

Zhang, S., Douglas, J. A., Wang, S., & Culpepper, S. A. (2019). Reduced Reparameterized Unified Model Applied to Learning Spatial Rotation Skills. In M. von Davier, & Y-S. Lee (Eds.), Handbook of Diagnostic Classification Models: Models and Model Extensions, Applications, Software Packages (pp. 503-524). (Methodology of Educational Measurement and Assessment). Springer.  link >

Chen, Y., Culpepper, S. A., Wang, S., & Douglas, J. (2018). A Hidden Markov Model for Learning Trajectories in Cognitive Diagnosis With Application to Spatial Rotation Skills. Applied Psychological Measurement, 42(1), 5-23.  link >

Chen, Y., Culpepper, S. A., Chen, Y., & Douglas, J. (2018). Bayesian Estimation of the DINA Q matrix. Psychometrika, 83(1), 89-108.  link >

Wang, S., Yang, Y., Culpepper, S. A., & Douglas, J. A. (2018). Tracking Skill Acquisition With Cognitive Diagnosis Models: A Higher-Order, Hidden Markov Model With Covariates. Journal of Educational and Behavioral Statistics, 43(1), 57-87.  link >

Wang, S., Zhang, S., Douglas, J., & Culpepper, S. (2018). Using Response Times to Assess Learning Progress: A Joint Model for Responses and Response Times. Measurement, 16(1), 45-58.  link >

van der Ark, L. A., Wiberg, M., Culpepper, S. A., Douglas, J. A., & Wang, W. C. (2017). Preface. Springer Proceedings in Mathematics and Statistics, 196, v.

Rosenblatt, K. A., Osterbur, E. F., & Douglas, J. A. (2016). Case-control study of cervical cancer and gynecologic screening: A SEER-Medicare analysis. Gynecologic Oncology, 142(3), 395-400.  link >

van der Ark, L. A., Bolt, D. M., Wang, W. C., Douglas, J. A., & Wiberg, M. (2016). Preface. Springer Proceedings in Mathematics and Statistics, 167.

Wang, S., Lin, H., Chang, H. H., & Douglas, J. (2016). Hybrid Computerized Adaptive Testing: From Group Sequential Design to Fully Sequential Design. Journal of Educational Measurement, 53(1), 45-62.  link >

Ye, S., Fellouris, G., Culpepper, S., & Douglas, J. (2016). Sequential detection of learning in cognitive diagnosis. British Journal of Mathematical and Statistical Psychology, 69(2), 139-158.  link >

Hong, H., Wang, C., Lim, Y. S., & Douglas, J. (2015). Efficient Models for Cognitive Diagnosis With Continuous and Mixed-Type Latent Variables. Applied Psychological Measurement, 39(1), 31-43.  link >

Van Der Ark, L. A., Bolt, D. M., Wang, W. C., Douglas, J. A., & Chow, S. M. (2015). Preface. Springer Proceedings in Mathematics and Statistics, 140, V.

Van Der Ark, L. A., Bolt, D. M., Wang, W. C., Douglas, J. A., & Chow, S. M. (2015). Preface. In Quantitative Psychology Research: The 79th Annual Meeting of the Psychometric Society, Madison, Wisconsin, 2014 (Vol. 140, pp. v). Springer.  link >

Van Der Ark, L. A., Bolt, D. M., Wang, W. C., Douglas, J. A., & Chow, S. M. (2015). Quantitative Psychology Research: The 79th Annual Meeting of the Psychometric Society, Madison, Wisconsin, 2014. Springer.  link >

Wang, S., & Douglas, J. (2015). Consistency of Nonparametric Classification in Cognitive Diagnosis. Psychometrika, 80(1), 85-100.  link >

Wisinski, K. B., Ledesma, W. M., Kolesar, J., Wilding, G., Liu, G., Douglas, J., Traynor, A. M., Albertini, M., Mulkerin, D., & Bailey, H. H. (2015). A phase i study to determine the maximum tolerated dose and safety of oral LR-103 (1α,24(S)Dihydroxyvitamin D₂) in patients with advanced cancer. Journal of Oncology Pharmacy Practice, 21(6), 416-424.  link >

Anderson, C. J., & Douglas, J. A. (Eds.) (2013). Classification in Educational Testing. Journal of Classification, 30(2).

Chiu, C. Y., & Douglas, J. A. (2013). A Nonparametric Approach to Cognitive Diagnosis by Proximity to Ideal Response Patterns. Journal of Classification, 30(2), 225-250.  link >

Wang, C., Fan, Z., Chang, H. H., & Douglas, J. A. (2013). A Semiparametric Model for Jointly Analyzing Response Times and Accuracy in Computerized Testing. Journal of Educational and Behavioral Statistics, 38(4), 381-417.  link >

Wang, C., Chang, H. H., & Douglas, J. A. (2013). The linear transformation model with frailties for the analysis of item response times. British Journal of Mathematical and Statistical Psychology, 66(1), 144-168.  link >

Fan, Z., Wang, C., Chang, H. H., & Douglas, J. (2012). Utilizing Response Time Distributions for Item Selection in CAT. Journal of Educational and Behavioral Statistics, 37(5), 655-670.  link >

Wang, C., Chang, H. H., & Douglas, J. (2012). Combining CAT with cognitive diagnosis: A weighted item selection approach. Behavior Research Methods, 44(1), 95-109.  link >

Bailey, H. H., Kim, K., Verma, A. K., Sielaff, K., Larson, P. O., Snow, S., Lenaghan, T., Viner, J. L., Douglas, J., Dreckschmidt, N. E., Hamielec, M., Pomplun, M., Sharata, H. H., Puchalsky, D., Berg, E. R., Havighurst, T. C., & Carbone, P. P. (2010). A randomized, double-blind, placebo-controlled phase 3 skin cancer prevention study of α-difluoromethylornithine in subjects with previous history of skin cancer. Cancer Prevention Research, 3(1), 35-47.  link >

Cheng, Y., Chang, H. H., Douglas, J., & Fanmin Guo, G. (2009). Constraint-weighted a-stratification for computerized adaptive testing with nonstatistical constraints: Balancing measurement efficiency and exposure control. Educational and Psychological Measurement, 69(1), 35-49.  link >

Chiu, C. Y., Douglas, J. A., & Li, X. (2009). Cluster analysis for cognitive diagnosis: Theory and applications. Psychometrika, 74(4), 633-665.  link >

Davis-Devine, S., Day, S., Anderson, A., French, A., Madison-Henness, D., Mohar, N., Tansy, D., Hiremath, A., Douglas, J., & Freund, G. G. (2009). Collection of the BD SurePath Pap Test with a broom device plus endocervical brush improves disease detection when compared to the broom device alone or the spatula plus endocervical brush combination. CytoJournal, 6, Article 4.  link >

Lee, Y. S., Wollack, J. A., & Douglas, J. A. (2009). On the use of nonparametric item characteristic curve estimation techniques for checking parametric model fit. Educational and Psychological Measurement, 69(2), 181-197.  link >

Liu, Y., Douglas, J. A., & Henson, R. A. (2009). Testing person fit in cognitive diagnosis. Applied Psychological Measurement, 33(8), 579-598.  link >

De La Torre, J., & Douglas, J. A. (2008). Model evaluation and multiple strategies in cognitive diagnosis: An analysis of fraction subtraction data. Psychometrika, 73(4), 595-624.  link >

Henson, R., Roussos, L., Douglas, J., & He, X. (2008). Cognitive diagnostic attribute-level discrimination indices. Applied Psychological Measurement, 32(4), 275-288.  link >

Hutson, P. R., Oettel, K., Douglas, J., Ritter, M., Messing, E., Staab, M. J., Alberti, D., Horvath, D., & Wilding, G. (2008). Effect of medical castration on CYP3A4 enzyme activity using the erythromycin breath test. Cancer Chemotherapy and Pharmacology, 62(3), 373-377.  link >

Henson, R., Templin, J., & Douglas, J. (2007). Using efficient model based sum-scores for conducting skills diagnoses. Journal of Educational Measurement, 44(4), 361-376.  link >

Lee, Y. S., Douglas, J., & Chewning, B. (2007). Techniques for developing health quality of life scales for point of service use. Social Indicators Research, 83(2), 331-350.  link >

Huie, M., Oettel, K., Van Ummersen, L., Kyung, M. K., Zhang, Y., Staab, M. J., Horvath, D., Marnocha, R., Douglas, J., Drezen, A., Alberti, D., & Wilding, G. (2006). Phase II study of interferon-alpha and doxycycline for advanced renal cell carcinoma. Investigational New Drugs, 24(3), 255-260.  link >

Shoff, S. M., Ahn, H. Y., Davis, L., Lai, H. C., Douglas, J., Fost, N., Green, C., Gregg, R., Kosorok, M., Laessig, R., Palta, M., Rock, M., Rosenberg, M., Tluezek, A., Wei, L. J., West, S., Wilfond, B., Bruns, W. T., Gershan, W., ... Rusakow, L. (2006). Temporal associations among energy intake, plasma linoleic acid, and growth improvement in response to treatment initiation after diagnosis of cystic fibrosis. Pediatrics, 117(2), 391-400.  link >

Xu, X., & Douglas, J. (2006). Computerized adaptive testing under nonparametric IRT models. Psychometrika, 71(1), 121-137.  link >

Henson, R., & Douglas, J. (2005). Test construction for cognitive diagnosis. Applied Psychological Measurement, 29(4), 262-277.  link >

Koscik, R. L., Lai, H. C. J., Laxova, A., Zaremba, K. M., Kosorok, M. R., Douglas, J. A., Rock, M. J., Splaingard, M. L., & Farrell, P. M. (2005). Preventing early, prolonged vitamin E deficiency: An opportunity for better cognitive outcomes via early diagnosis through neonatal screening. Journal of Pediatrics, 147(3 SUPPL.), S51-S56.  link >

Koscik, R. L., Douglas, J. A., Zaremba, K., Rock, M. J., Splaingard, M. L., Laxova, A., & Farrell, P. M. (2005). Quality of life of children with cystic fibrosis. Journal of Pediatrics, 147(3 SUPPL.), S64-S68.  link >

McMurray, J. E., Heiligers, P. J. M., Shugerman, R. P., Douglas, J. A., Gangnon, R. E., Voss, C., Costa, S. T., & Linzer, M. (2005). Part-time medical practice: Where is it headed? American Journal of Medicine, 118(1), 87-92.  link >

Song, M. K., Kirchhoff, K. T., Douglas, J., Ward, S., & Hammes, B. (2005). A randomized, controlled trial to improve advance care planning among patients undergoing cardiac surgery. Medical Care, 43(10), 1049-1053.  link >

De La Torre, J., & Douglas, J. A. (2004). Higher-order latent trait models for cognitive diagnosis. Psychometrika, 69(3), 333-353.  link >

Koscik, R. L., Farrell, P. M., Kosorok, M. R., Zaremba, K. M., Laxova, A., Lai, H. C., Douglas, J. A., Rock, M. J., & Splaingard, M. L. (2004). Cognitive function of children with cystic fibrosis: Deleterious effect of early malnutrition. Pediatrics, 113(6 I), 1549-1558.  link >

Linzer, M., Gerrity, M., Douglas, J. A., McMurray, J. E., Williams, E. S., & Konrad, T. R. (2002). Physician stress: Results from the physician worklife study. Stress and Health, 18(1), 37-42.  link >

Pathman, D. E., Konrad, T. R., Williams, E. S., Scheckler, W. E., Linzer, M., & Douglas, J. (2002). Physician job satisfaction, dissatisfaction, and turnover. The Journal of family practice, 51(7), 593.

Wang, C., Douglas, J., & Anderson, S. (2002). Item response models for joint analysis of quality of life and survival. Statistics in Medicine, 21(1), 129-142.  link >

Wetterneck, T. B., Linzer, M., McMurray, J. E., Douglas, J., Schwartz, M. D., Bigby, J., Gerrity, M. S., Pathman, D. E., Karlson, D., & Rhodes, E. (2002). Worklife and satisfaction of general internists. Archives of Internal Medicine, 162(6), 649-656.  link >

Williams, E. S., Konrad, T. R., Linzer, M., McMurray, J., Pathman, D. E., Gerrity, M., Schwartz, M. D., Scheckler, W. E., & Douglas, J. (2002). Physician, practice, and patient characteristics related to primary care physician physical and mental health: Results from the physician worklife study. Health Services Research, 37(1), 121-143.

Carbone, P. P., Pirsch, J. D., Thomas, J. P., Douglas, J. A., Verma, A. K., Larson, P. O., Snow, S., Tutsch, K. D., & Pauk, D. (2001). Phase I chemoprevention study of difluoromethylornithine in subjects with organ transplants. Cancer Epidemiology Biomarkers and Prevention, 10(6), 657-661.

Chewning, B., Douglas, J., Kokotailo, P. K., LaCourt, J., Clair, D. S., & Wilson, D. (2001). Protective factors associated with American Indian adolescents' safer sexual patterns. Maternal and child health journal, 5(4), 273-280.  link >

Douglas, J. A. (2001). Asymptotic identifiability of nonparametric item response models. Psychometrika, 66(4), 531-540.  link >

Douglas, J., & Cohen, A. (2001). Nonparametric item response function estimation for assessing parametric model fit. Applied Psychological Measurement, 25(3), 234-243.  link >

Kotwicki, R. J., Condra, L., Vermeulen, L., Wolf, T., Douglas, J., & Farrell, P. M. (2001). Assessing the quality of life in children with cystic fibrosis. Wisconsin Medical Journal, 100(5), 50-54.

Shugerman, R., Linzer, M., Nelson, K., Douglas, J., Williams, R., & Konrad, R. (2001). Pediatric generalists and subspecialists: determinants of career satisfaction. Pediatrics, 108(3), E40.  link >

PCOPR INVESTIGATNE RESEARCH TEAM (2001). Does the concordance concept serve patient medication management? International Journal of Pharmacy Practice, 9(2), 71-79.  link >

Carbone, P. P., Douglas, J. A., Thomas, J., Tutsch, K., Pomplun, M., Hamielec, M., & Pauk, D. (2000). Bioavailability study of oral liquid and tablet forms of α-difluoromethylornithine. Clinical Cancer Research, 6(10), 3850-3854.

Linzer, M., Konrad, T. R., Douglas, J., McMurray, J. E., Pathman, D. E., Williams, E. S., Schwartz, M. D., Gerrity, M., Scheckler, W., Bigby, J. A., & Rhodes, E. (2000). Managed care, time pressure, and physician job satisfaction: Results from the physician worklife study. Journal of General Internal Medicine, 15(7), 441-450.  link >

McMurray, J. E., Linzer, M., Konrad, T. R., Douglas, J., Shugerman, R., & Nelson, K. (2000). The work lives of women physicians: Results from the physician work life study. Journal of General Internal Medicine, 15(6), 372-380.  link >

Douglas, J. A., Kosorok, M. R., & Chewning, B. A. (1999). A latent variable model for discrete multivariate psychometric waiting times. Psychometrika, 64(1), 69-82.  link >

Douglas, J. A. (1999). Item response models for longitudinal quality of life data in clinical trials. Statistics in Medicine, 18(21), 2917-2931.  link >

Konrad, T. R., Williams, E. S., Linzer, M., McMurray, J., Pathman, D. E., Gerrity, M., Schwartz, M. D., Scheckler, W. E., Van Kirk, J., Rhodes, E., & Douglas, J. (1999). Measuring physician job satisfaction in a changing workplace and a challenging environment. Medical Care, 37(11), 1174-1182.  link >

Messing, E. M., Love, R. R., Tutsch, K. D., Verma, A. K., Douglas, J., Pomplun, M., Simsiman, R., & Wilding, G. (1999). Low-dose difluoromethylornithine and polyamine levels in human prostate tissue. Journal of the National Cancer Institute, 91(16), 1416-1417.  link >

Rock, M. J., Davis, L., Marcus, M., Lai, H. C., Douglas, J., Kosorok, M., Zaremba, K., Zeng, L., Laxova, A., & Farrell, P. M. (1999). Early nutritional intervention in infants with CF. Pediatric Pulmonology, 28(SUPPL. 19), 102-103.

Williams, E. S., Konrad, T. R., Linzer, M., McMurray, J., Pathman, D. E., Gerrity, M., Schwartz, M. D., Scheckler, W. E., Van Kirk, J., Rhodes, E., & Douglas, J. (1999). Refining the measurement of physician job satisfaction: Results from the physician worklife survey. Medical Care, 37(11), 1140-1154.  link >

Carbone, P. P., Douglas, J. A., Larson, P. O., Verma, A. K., Blair, I. A., Pomplun, M., & Tutsch, K. D. (1998). Phase I chemoprevention study of piroxicam and α- difluoromethylornithine. Cancer Epidemiology Biomarkers and Prevention, 7(10), 907-912.

Douglas, J., Kim, H. R., Habing, B., & Gao, F. (1998). Investigating Local Dependence with Conditional Covariance Functions. Journal of Educational and Behavioral Statistics, 23(2), 129-151.  link >

Douglas, J. (1997). Joint consistency of nonparametric item characteristic curve and ability estimation. Psychometrika, 62(1), 7-28.  link >

Gerrity, M. S., Pathman, D. E., Linzer, M., Steiner, B. D., Winterbottom, L. M., Sharp, M. C., Skochelak, S. E., McMurray, J. E., Douglas, J., Van Kirk, J., Frey, J., Scheckler, W. E., Williams, E. S., Konrad, T. R., Schwartz, M. D., Rhodes, E., Bigby, J. A., Nelson, K. G., Ramsbottom-Lucier, M., & Shugerman, R. (1997). Career satisfaction and clinician-educators: The rewards and challenges of teaching. Journal of General Internal Medicine, 12(SUPPL. 2), S90-S97.  link >

McMurray, J. E., Williams, E., Schwartz, M. D., Douglas, J., Van Kirk, J., Konrad, T. R., Gerrity, M., Bigby, J. A., & Linzer, M. (1997). Physician job satisfaction: Developing a model using qualitative data. Journal of General Internal Medicine, 12(11), 711-714.  link >

Cleeland, C. S., Nakamura, Y., Mendoza, T. R., Edwards, K. R., Douglas, J., & Serlin, R. C. (1996). Dimensions of the impact of cancer pain in a four country sample: New information from multidimensional scaling. Pain, 67(2-3), 267-273.  link >

Douglas, J. A., Stout, W., & DiBello, L. V. (1996). A Kernel-Smoothed Version of SIBTEST with Applications to Local DIF Inference and Function Estimation. Journal of Educational and Behavioral Statistics, 21(4), 333-363.  link >

Douglas, J. A., Roussos, L. A., & Stout, W. F. (1996). Item-bundle DIF hypothesis testing: Identifying suspect bundles and assessing their differential functioning. Journal of Educational Measurement, 33(4), 465-484.  link >

Stout, W., Habing, B., Douglas, J., Kim, H. R., Roussos, L., & Zhang, J. (1996). Conditional covariance-based nonparametric multidimensionality assessment. Applied Psychological Measurement, 20(4), 331-354.  link >