01184nas a2200157 4500008004500000245009300045210006900138300001200207490000600219520062800225100001600853700001900869700001400888700001500902856010900917 2008 Engldsh 00aImpact of altering randomization intervals on precision of measurement and item exposure0 aImpact of altering randomization intervals on precision of measu a160-1670 v93 a
This paper reports on the use of simulation when a randomization procedure is used to control item exposure in a computerized adaptive test for certification. We present a method to determine the optimum width of the interval from which items are selected and we report on the impact of relaxing the interval width on measurement precision and item exposure. Results indicate that, if the item bank is well targeted, it may be possible to widen the randomization interval and thus reduce item exposure, without seriously impacting the error of measure for test takers whose ability estimate is near the pass point.
1 aMuckle, T J1 aBergstrom, B A1 aBecker, K1 aStahl, J A uhttp://iacat.org/content/impact-altering-randomization-intervals-precision-measurement-and-item-exposure00407nas a2200109 4500008004100000245006300041210006300104260001800167100001400185700001500199856008300214 1998 eng d00aPatterns of item exposure using a randomized CAT algorithm0 aPatterns of item exposure using a randomized CAT algorithm aSan Diego, CA1 aLunz, M E1 aStahl, J A uhttp://iacat.org/content/patterns-item-exposure-using-randomized-cat-algorithm00483nas a2200121 4500008004100000245008400041210006900125260001500194100001400209700001500223700002400238856009900262 1993 eng d00aTest targeting and precision before and after review on computer-adaptive tests0 aTest targeting and precision before and after review on computer aAtlanta GA1 aLunz, M E1 aStahl, J A1 aBergstrom, Betty, A uhttp://iacat.org/content/test-targeting-and-precision-and-after-review-computer-adaptive-tests00406nas a2200097 4500008004100000245006900041210006900110100002400179700001500203856009000218 1992 eng d00aAssessing existing item bank depth for computer adaptive testing0 aAssessing existing item bank depth for computer adaptive testing1 aBergstrom, Betty, A1 aStahl, J A uhttp://iacat.org/content/assessing-existing-item-bank-depth-computer-adaptive-testing