@conference {1223,
	title = {Can examinees use judgments of item difficulty to improve proficiency estimates on computerized adaptive vocabulary tests?},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2001},
	note = {$\#$VI01-01},
	address = { Seattle WA},
	author = {Vispoel, W. P. and Clough, S. J. and Bleiler, T. Hendrickson, A. B. and Ihrig, D.}
}
