@article {95,
	title = {Strategies for controlling item exposure in computerized adaptive testing with the partial credit model},
	journal = {Journal of Applied Measurement},
	volume = {9},
	number = {1},
	year = {2008},
	note = {Davis, Laurie LaughlinDodd, Barbara GUnited StatesJournal of applied measurementJ Appl Meas. 2008;9(1):1-17.},
	pages = {1-17},
	edition = {2008/01/09},
	abstract = {Exposure control research with polytomous item pools has determined that randomization procedures can be very effective for controlling test security in computerized adaptive testing (CAT). The current study investigated the performance of four procedures for controlling item exposure in a CAT under the partial credit model. In addition to a no exposure control baseline condition, the Kingsbury-Zara, modified-within-.10-logits, Sympson-Hetter, and conditional Sympson-Hetter procedures were implemented to control exposure rates. The Kingsbury-Zara and the modified-within-.10-logits procedures were implemented with 3 and 6 item candidate conditions. The results show that the Kingsbury-Zara and modified-within-.10-logits procedures with 6 item candidates performed as well as the conditional Sympson-Hetter in terms of exposure rates, overlap rates, and pool utilization. These two procedures are strongly recommended for use with partial credit CATs due to their simplicity and strength of their results.},
	keywords = {*Algorithms, *Computers, *Educational Measurement/statistics \& numerical data, Humans, Questionnaires/*standards, United States},
	isbn = {1529-7713 (Print)1529-7713 (Linking)},
	author = {Davis, L. L. and Dodd, B. G.}
}
@article {96,
	title = {An examination of exposure control and content balancing restrictions on item selection in CATs using the partial credit model},
	journal = {Journal of Applied Measurement},
	volume = {4},
	number = {1},
	year = {2003},
	note = {1529-7713Journal Article},
	pages = {24-42},
	abstract = {The purpose of the present investigation was to systematically examine the effectiveness of the Sympson-Hetter technique and rotated content balancing relative to no exposure control and no content rotation conditions in a computerized adaptive testing system (CAT) based on the partial credit model. A series of simulated fixed and variable length CATs were run using two data sets generated to multiple content areas for three sizes of item pools. The 2 (exposure control) X 2 (content rotation) X 2 (test length) X 3 (item pool size) X 2 (data sets) yielded a total of 48 conditions. Results show that while both procedures can be used with no deleterious effect on measurement precision, the gains in exposure control, pool utilization, and item overlap appear quite modest. Difficulties involved with setting the exposure control parameters in small item pools make questionable the utility of the Sympson-Hetter technique with similar item pools.},
	keywords = {*Computers, *Educational Measurement, *Models, Theoretical, Automation, Decision Making, Humans, Reproducibility of Results},
	author = {Davis, L. L. and Pastor, D. A. and Dodd, B. G. and Chiang, C. and Fitzpatrick, S. J.}
}
