. (1990). An adaptive algebra test: A testlet-based, hierarchically structured test with validity-based scoring. ETS Technical Report 90-92.
. (1990). Using Bayesian Decision Theory to Design a Computerized Mastery Test. Applied Psychological Measurement, 14(4), 367-386.
v14n4p367.pdf (1.29 MB). (1991). Building algebra testlets: A comparison of hierarchical and linear structures. Journal of Educational Measurement, 8, xxx-xxx.
. (1991). Some empirical guidelines for building testlets (Technical Report 91-56). Princeton NJ: Educational Testing Service, Program Statistics Research.
. (1992). A comparison of the performance of simulated hierarchical and linear testlets. Journal of Educational Measurement, 29, 243-251.
. (1992). Computerized mastery testing with nonequivalent testlets. Applied Psychological Measurement, 16, 65-76.
. (1992). Computerized Mastery Testing With Nonequivalent Testlets. Applied Psychological Measurement, 16(1), 65-76.
v16n1p065.pdf (726.94 KB). (1993). Computerized mastery testing using fuzzy set decision theory. Applied Measurement in Education, 6, 181-193.
. (1994). Computerized mastery testing using fuzzy set decision theory (Research Report 94-37). Princeton NJ: Educational Testing Service.
. (1995). A Bayesian computerized mastery model with multiple cut scores. In Paper presented at the annual meeting of the National Council on Measurement in Education. San Francisco CA.
. (1995). A comparison of two IRT-based models for computerized mastery testing when item parameter estimates are uncertain. In Paper presented at the annual meeting of the American Educational Research Association. San Francisco.
. (1995). Computer-adaptive testing: A new breed of assessment. Journal of the American Dietetic Association, 95, 1326-1327.
. (1995). Computer-adaptive testing: A new breed of assessment. Journal of the American Dietetic Association, 95, 1326-1327.
. (1995). Controlling item exposure conditional on ability in computerized adaptive testing (Research Report 95-25). Princeton NJ: Educational Testing Service.
. (1995). A new method of controlling item exposure in computerized adaptive testing (Research Report 95-25). Princeton NJ: Educational Testing Service.
. (1996). Person-fit indices and their role in the CAT environment. In Paper presented at the annual meeting of the National Council on Measurement in Education. New York.
. (1996). Person-fit indices and their role in the CAT environment. In Paper presented at the Annual meeting of the National Council on Measurement in Education. New York NY.
. (1996). A search procedure to determine sets of decision points when using testlet-based Bayesian sequential testing procedures. In Paper presented at the annual meeting of National Council on Measurement in Education. New York.
. (1997). Incorporating decision consistency into Bayesian sequential testing. In Paper presented at the annual meeting of National Council on Measurement in Education. Chicago.
. (1998). Adaptive testing without IRT. In Paper presented at the annual meeting of the National Council on Measurement in Education. San Diego CA.
. (1998). A Bayesian approach to detection of item preknowledge in a CAT. In Paper presented at the annual meeting of the National Council on Measurement in Education. San Diego CA.
. (1998). Comparability of paper-and-pencil and computer adaptive test scores on the GRE General Test (GRE Board Professional Report No 95-08P; Educational Testing Service Research Report 98-38). Princeton, NJ: Educational Testing Service.
. (1998). Comparability of paper-and-pencil and computer adaptive test scores on the GRE General Test (No. ETS Research Report 98-38). presented at the August, 1998, Princeton, N.J.: Educational Testing Services.
. (1998). Controlling item exposure conditional on ability in computerized adaptive testing. Journal of Educational & Behavioral Statistics, 23, 57-75.
. (1998). Expected losses for individuals in Computerized Mastery Testing. In Paper presented at the annual meeting of National Council on Measurement in Education. San Diego.
. (1998). A new approach for the detection of item preknowledge in computerized adaptive testing. In Paper presented at the annual meeting of the Psychometric Society. Urbana, IL.
. (1999). Detecting item memorization in the CAT environment. Applied Psychological Measurement, 23, 147-160.
. (2000). Methods of controlling the exposure of items in CAT. In . W. J. van der Linden and C. A. W. Glas (eds.), Computerized adaptive testing: Theory and practice (pp. 163-182). Norwell MA: Kluwer.
. (2002). Adaptive testing without IRT in the presence of multidimensionality (Research Report 02-09). Princeton NJ: Educational Testing Service.
. (2002). A comparison of computer mastery models when pool characteristics vary. In Paper presented at the annual meeting of the National Council on Measurement in Education. New Orleans LA.
sm02-01.pdf (691.36 KB). (2003). A Bayesian method for the detection of item preknowledge in computerized adaptive testing. Applied Psychological Measurement, 27, 121-137.
. (2007). Some thoughts on controlling item exposure in adaptive testing. In . D. J. Weiss (Ed.), Proceedings of the 2007 GMAC Conference on Computerized Adaptive Testing.
cat07lewis.pdf (356.34 KB). (2009). Optimizing item exposure control algorithms for polytomous computerized adaptive tests with restricted item banks. In . D. J. Weiss (Ed.), Proceedings of the 2009 GMAC Conference on Computerized Adaptive Testing.
cat09chajewski.pdf (922.78 KB)