01256nas a2200145   4500008004100000245006500041210006500106300001000171490000700181520076500188653003400953100002300987700001601010856008401026       2000                        eng d00aCapitalization on item calibration error in adaptive testing0 aCapitalization on item calibration error in adaptive testing  a35-530 v133 a(from the journal abstract) In adaptive testing, item selection is sequentially optimized during the test. Because the optimization takes place over a pool of items calibrated with estimation error, capitalization on chance is likely to occur. How serious the consequences of this phenomenon are depends not only on the distribution of the estimation errors in the pool or the conditional ratio of the test length to the pool size given ability, but may also depend on the structure of the item selection criterion used. A simulation study demonstrated a dramatic impact of capitalization on estimation errors on ability estimation. Four different strategies to minimize the likelihood of capitalization on error in computerized adaptive testing are discussed.10acomputerized adaptive testing1 avan der Linden, WJ1 aGlas, C A W  uhttp://iacat.org/content/capitalization-item-calibration-error-adaptive-testing