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- W2075698049 abstract "A computerized adaptive testing (CAT) algorithm that has the potential to increase the homogeneity of CAT's item‐exposure rates without significantly sacrificing the precision of ability estimates was proposed and assessed in the shadow‐test ( van der Linden & Reese, 1998 ) CAT context. This CAT algorithm was formed by a combination of maximizing or minimizing varied target functions while assembling shadow tests. There were four target functions to be separately used in the first, second, third, and fourth quarter test of CAT. The elements to be used in the four functions were associated with (a) a random number assigned to each item, (b) the absolute difference between an examinee's current ability estimate and an item difficulty, (c) the absolute difference between an examinee's current ability estimate and an optimum item difficulty, and (d) item information. The results indicated that this combined CAT fully utilized all the items in the pool, reduced the maximum exposure rates, and achieved more homogeneous exposure rates. Moreover, its precision in recovering ability estimates was similar to that of the maximum item‐information method. The combined CAT method resulted in the best overall results compared with the other individual CAT item‐selection methods. The findings from the combined CAT are encouraging. Future uses are discussed." @default.
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- W2075698049 date "2005-07-14" @default.
- W2075698049 modified "2023-10-12" @default.
- W2075698049 title "Increasing the Homogeneity of CAT's Item-Exposure Rates by Minimizing or Maximizing Varied Target Functions While Assembling Shadow Tests" @default.
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- W2075698049 doi "https://doi.org/10.1111/j.1745-3984.2005.00013.x" @default.
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