Published Research Papers
Lee, Y. -S., Wollack, J. A., Douglas, J. (in press). On the Use of Nonparametric ICC Estimation Techniques For Checking Parametric Model Fit. Educational and Psychological Measurement.
Wollack, J. A. (2007). Cheating Detection at Your Fingertips: A Review of INTEGRITY. Applied Psychological Measurement, 31, 233-239.
Cohen, A. S., & Wollack, J. A. (2006). Test administration, security, scoring, and reporting. In. R. L. Brennan (Ed.) Educational Measurement (4th ed., pp. 355-386). Westport, CT: American Council on Education/Praeger.
Wollack, J. A. (2006). Simultaneous Use of Multiple Answer Copying Indexes to Improve Detection Rates. Applied Measurement in Education, 19, 265-288.
Odell, K., Wollack, J. A., & Flynn, M. (2005). Functional outcomes in patients with right hemisphere brain damage. Aphasiology, 19, 807-830.
Li, Y., Cohen, A.S., & Ibarra, R.A. (2004). Characteristics of mathematics items associated with gender DIF. International Journal of Testing, 4(2), 115-136.
Wollack, J. A. (2004). Detecting answer copying on high stakes tests. The Bar Examiner, 73, 35-45.
Wollack, J. A. (2003). Comparison of Answer Copying Indices on Real Data. Journal of Educational Measurement, 40, 189-205.
Wollack, J. A., Cohen, A. S., & Wells, C. S. (2003). A method for maintaining scale stability in the presence of test speededness. Journal of Educational Measurement, 40, 307-330.
Bolt, D. M., Cohen, A. S., & Wollack, J. A. (2002). Item parameter estimation under conditions of test speededness: Application of a mixture Rasch model with ordinal constraints. Journal of Educational Measurement, 39, 331-348.
Kim, S.-H., & Cohen, A.S. (2002). A comparison of linking and concurrent calibration under the graded response model. Applied Psychological Measurement, 26(1), 25-41.
Wollack, J. A., Bolt, D. M., Cohen, A. S., & Lee, Y. -S. (2002). Recovery of item parameters in the nominal response model: A comparison of marginal maximum likelihood estimation and Markov chain Monte Carlo estimation. Applied Psychological Measurement, 26, 337-350.
Bolt, D. M., Cohen, A. S., & Wollack, J. A. (2001). A mixture item response model for multiple-choice data. Journal of Educational and Behavioral Statistics, 26, 381-409.
Wollack, J. A., Cohen, A. S., & Serlin, R. C. (2001). Defining error rates and power for detecting answer copying. Applied Psychological Measurement, 25(4), 385-404.
Wollack, J. A., & Levin, J. R. (2001). Kadane's Index of Examination Copying, Reconsidered.Chance 14(1), 3-4.
Cohen, A.S., Kane, M.T., & Kim, S.-H. (2001). The precision of simulation study results.
Applied Psychological Measurement, 25(2), 136-145.
Douglas, J., & Cohen, A.S. (2001). Nonparametric item response function for assessing model fit. Applied Psychological Measurement, 25(3), 234-243.
Cohen, A.S., Bottge, B.A., Wells, C.S. (2001). Using item response theory to assess effects of mathematics instruction in special populations. Exceptional Children, 68(1), 23-44.
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