@conference {1280,
	title = {Effects of test administration mode on item parameter estimates},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2003},
	note = {{PDF file, 233 KB}},
	address = {Chicago IL},
	author = {Yi, Q. and Harris, D. J. and Wang, T. and Ban, J-C.}
}
@article {14,
	title = {Data sparseness and on-line pretest item calibration-scaling methods in CAT},
	journal = {Journal of Educational Measurement},
	volume = {39},
	number = {3},
	year = {2002},
	pages = {207-218},
	abstract = {Compared and evaluated 3 on-line pretest item calibration-scaling methods (the marginal maximum likelihood estimate with 1 expectation maximization [EM] cycle [OEM] method, the marginal maximum likelihood estimate with multiple EM cycles [MEM] method, and M. L. Stocking{\textquoteright}s Method B) in terms of item parameter recovery when the item responses to the pretest items in the pool are sparse. Simulations of computerized adaptive tests were used to evaluate the results yielded by the three methods. The MEM method produced the smallest average total error in parameter estimation, and the OEM method yielded the largest total error (PsycINFO Database Record (c) 2005 APA )},
	keywords = {Computer Assisted Testing, Educational Measurement, Item Response Theory, Maximum Likelihood, Methodology, Scaling (Testing), Statistical Data},
	author = {Ban, J-C. and Hanson, B. A. and Yi, Q. and Harris, D. J.}
}
@conference {1284,
	title = {Impact of scoring options for not reached items in CAT},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2001},
	note = {PDF file, 232 K},
	address = {Seattle WA},
	author = {Yi, Q. and Widiatmo, H. and Ban, J-C. and Harris, D. J.}
}
