02650nas a2200133   4500008004100000245007300041210006900114300000900183490000700192520217300199653003402372100001702406856009302423       2000                        eng d00aA comparison of computerized adaptive testing and multistage testing0 acomparison of computerized adaptive testing and multistage testi  a58290 v603 aThere is considerable evidence to show that computerized-adaptive testing (CAT) and multi-stage testing (MST) are viable frameworks for testing. With many testing organizations looking to move towards CAT or MST, it is important to know what framework is superior in different situations and at what cost in terms of measurement. What was needed is a comparison of the different testing procedures under various realistic testing conditions. This dissertation addressed the important problem of the increase or decrease in accuracy of ability estimation in using MST rather than CAT. The purpose of this study was to compare the accuracy of ability estimates produced by MST and CAT while keeping some variables fixed and varying others. A simulation study was conducted to investigate the effects of several factors on the accuracy of ability estimation using different CAT and MST designs. The factors that were manipulated are the number of stages, the number of subtests per stage, and the number of items per subtest. Kept constant were test length, distribution of subtest information, method of determining cut-points on subtests, amount of overlap between subtests, and method of scoring total test. The primary question of interest was, given a fixed test length, how many stages and many subtests per stage should there be to maximize measurement precision? Furthermore, how many items should there be in each subtest? Should there be more in the routing test or should there be more in the higher stage tests? Results showed that, in general, increasing the number of stages from two to three decreased the amount of errors in ability estimation. Increasing the number of subtests from three to five increased the accuracy of ability estimates as well as the efficiency of the MST designs relative to the P&P and CAT designs at most ability levels (-.75 to 2.25). Finally, at most ability levels (-.75 to 2.25), varying the number of items per stage had little effect on either the resulting accuracy of ability estimates or the relative efficiency of the MST designs to the P&P and CAT designs. (PsycINFO Database Record (c) 2003 APA, all rights reserved).10acomputerized adaptive testing1 aPatsula, L N  uhttp://iacat.org/content/comparison-computerized-adaptive-testing-and-multistage-testing00514nas a2200109   4500008004100000245012100041210006900162260001900231100001700250700001600267856012100283       2000                        eng d00aDetecting test-takers who have memorized items in computerized-adaptive testing and muti-stage testing: A comparison0 aDetecting testtakers who have memorized items in computerizedada  aNew Orleans LA1 aPatsula, L N1 aMcLeod, L D  uhttp://iacat.org/content/detecting-test-takers-who-have-memorized-items-computerized-adaptive-testing-and-muti-stage00490nas a2200109   4500008004100000245010000041210006900141260002000210100001700230700001800247856011500265       1999                        eng d00aA comparative study of ability estimates from computer-adaptive testing and multi-stage testing0 acomparative study of ability estimates from computeradaptive tes  aMontreal Canada1 aPatsula, L N1 aHambleton, RK  uhttp://iacat.org/content/comparative-study-ability-estimates-computer-adaptive-testing-and-multi-stage-testing00471nam a2200097   4500008004100000245007400041210006900115260007800184100001700262856009400279       1999                        eng d00aA comparison of computerized-adaptive testing and multi-stage testing0 acomparison of computerizedadaptive testing and multistage testin  aUnpublished doctoral dissertation, University of Massachusetts at Amherst1 aPatsula, L N  uhttp://iacat.org/content/comparison-computerized-adaptive-testing-and-multi-stage-testing00445nas a2200109   4500008004100000245008000041210006900121260001600190100001700206700001500223856009700238       1997                        eng d00aMaintaining item and test security in a CAT environment: A simulation study0 aMaintaining item and test security in a CAT environment A simula  aChicago IL)1 aPatsula, L N1 aSteffen, M  uhttp://iacat.org/content/maintaining-item-and-test-security-cat-environment-simulation-study