PUBLICATIONS

 

  1. A Scale-Based Approach to Finding Effective Dimensionality in manifold learning, (joint with J.S. Marron), (2008), Electronic Journal of Statistics, vol. 2, 127-148.

 

  1. A Bayesian method for studying DIF: A cautionary tale filled with surprises and delights, (joint with H. Wainer and E.T. Bradlow), (2007), Journal of Educational and Behavioral Statistics, to appear.

 

  1. Testlet Response Theory and Its Applications, (joint with H. Wainer and E.T. Bradlow), Cambridge University Press, Aprill 2007.

 

  1. An application of Testlet Response Theory in the scoring a complex certification exam, (joint with H. Wainer, L.M. Brown, E.T. Bradlow, W.P. Skorupski, J. Boulet, and R.J. Mislevy), (2006).  In D.M. Williamson, R.J. Mislevy, and I.I. Bejar (eds) Automated Scoring of Complex Tasks in Computer Based Testing. Hillsdale, NJ: Lawrence Erlbaum Associates, Chapter 6, pages 169-199.

 

  1. A Bayesian advantage in evaluating passing scores: The PPoP curve, (joint with H. Wainer, W.P., Skorupski,  and E.T. Bradlow), (2005), Journal of Educational Measurement, Fall, Vol. 42, No. 3, 271-282.

 

  1. A general Bayesian model for Testlets: theory and applications, (joint with H. Wainer and E.T. Bradlow), (2002), Applied Psychological Measurement, 26(1), 109-128.

 

  1. Nonparametric item response function estimates with the EM algorithm, (joint with J.O. Ramsay and N. Rossi), (2002), Journal of Educational and Behavioral Statistics, 27(3), 291-317.

 

  1. Using a new statistical model for Testlets to score TOEFL, (joint with H. Wainer), (2000), Journal of Educational Measurement, 37, 203-220.

 

  1. Some paths toward making Praxis scores more useful, (joint with H. Wainer and K. Sheehan), (2000), Journal of Educational Measurement, 37, 113-140.

 

  1. A Bayesian random effects model for Testlets, (joint with H. Wainer and E.T. Bradlow), (1999), Psychometrika, 64, 153-168.

 

  1. Diel Iocomotory activity of deer mice (Peromyscus Maniculatus) infected with Trichinella native or Trichinella pseudospiralis, (joint with S.R. Poirier and M.E. Rau), (1995), Canadian Journal of Zoology, 73(7), 1323-1334.

 

  1. A functional data analysis of the pinch force of human fingers, (joint with J.O. Ramsay and R.Flanagan), (1995), Applied Statistics, 44(1), 17-30.

 

 

SUBMITTED PAPERS:

 

1. Using testlet response theory to understand a survey of breast cancer patients, (joint with H. Wainer, S. Baldwin, and E.T. Bradlow).

 

 

PAPERS IN PROGRESS:

 

·        A hierarchical Bayesian framework for Item Response Theory Models with applications in Ideal Point Estimation, (joint with Y. Lu)

 

·        Bayesian models for dimension reduction, (joint with D. Spitzner)

 

·        Recent work of variable selection in mixed effect models