. (2007). Computerized Adaptive Testing for Polytomous Motivation Items: Administration Mode Effects and a Comparison With Short Forms. Applied Psychological Measurement, 31, 412-429. doi:10.1177/0146621606297314
. (2005). A Randomized Experiment to Compare Conventional, Computerized, and Computerized Adaptive Administration of Ordinal Polytomous Attitude Items. Applied Psychological Measurement, 29, 159-183. doi:10.1177/0146621604271268