@conference {873, title = {To weight or not to weight {\textendash} balancing influence of initial and later items in CAT}, booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education}, year = {2002}, note = {{PDF file, 252 KB}}, address = {New Orleans LA}, author = {Chang, Hua-Hua and Ying, Z.} }