01299nas a2200157   4500008004100000245007500041210006900116300001000185490000700195520076100202653003400963100001800997700001401015700001701029856009501046       1998                        eng d00aSimulating the use of disclosed items in computerized adaptive testing0 aSimulating the use of disclosed items in computerized adaptive t  a48-680 v353 aRegular use of questions previously made available to the public (i.e., disclosed items) may provide one way to meet the requirement for large numbers of questions in a continuous testing environment, that is, an environment in which testing is offered at test taker convenience throughout the year rather than on a few prespecified test dates. First it must be shown that such use has effects on test scores small enough to be acceptable. In this study simulations are used to explore the use of disclosed items under a worst-case scenario which assumes that disclosed items are always answered correctly. Some item pool and test designs were identified in which the use of disclosed items produces effects on test scores that may be viewed as negligible.10acomputerized adaptive testing1 aStocking, M L1 aWard, W C1 aPotenza, M T  uhttp://mail.iacat.org/content/simulating-use-disclosed-items-computerized-adaptive-testing01407nas a2200133   4500008004100000245008900041210006900130300001200199490000700211520089300218653003401111100001801145856011001163       1997                        eng d00aRevising item responses in computerized adaptive tests: A comparison of three models0 aRevising item responses in computerized adaptive tests A compari  a129-1420 v213 aInterest in the application of large-scale computerized adaptive testing has focused attention on issues that arise when theoretical advances are made operational. One such issue is that of the order in which exaniinees address questions within a test or separately timed test section. In linear testing, this order is entirely under the control of the examinee, who can look ahead at questions and return and revise answers to questions. Using simulation, this study investigated three models that permit restricted examinee control over revising previous answers in the context of adaptive testing. Even under a worstcase model of examinee revision behavior, two of the models of permitting item revisions worked well in preserving test fairness and accuracy. One model studied may also preserve some cognitive processing styles developed by examinees for a linear testing environment. 10acomputerized adaptive testing1 aStocking, M L  uhttp://mail.iacat.org/content/revising-item-responses-computerized-adaptive-tests-comparison-three-models