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. (2001). Precision of Warm’s weighted likelihood estimation of ability for a polytomous model in CAT. Applied Psychological Measurement, 25, 317-331.
. (1999). Precision of Warm's weighted likelihood estimation of ability for a polytomous model in CAT. In Paper presented at the annual meeting of the American Educational Research Association. Montreal.
wa99-02.pdf (603.32 KB). (1998). Properties of ability estimation methods in computerized adaptive testing. Journal of Educational Measurement, 35, 109-135.
. (1995). Precision of ability estimation methods in computerized adaptive testing. In Paper presented at the annual meeting of the Psychometric Society. Minneapolis.
. (1995). The precision of ability estimation methods in computerized adaptive testing. Unpublished doctoral dissertation, University of Iowa, Iowa City (UM No. 9945102).