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Relative precision of ability estimation in polytomous CAT: A comparison under the generalized partial credit model and graded response model. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans LA.
. (2002). wa02-01.pdf (734.77 KB)Reducing bias in CAT trait estimation: A comparison of approaches. Applied Psychological Measurement, 23, 263-278.
. (1999).