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頁籤選單縮合
題名 | Some Statistical and Logical Considerations When Rescoring Tests= |
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作者 | Bradlow,Eric T.; Wainer,Howard; |
期刊 | Statistica Sinica |
出版日期 | 19980700 |
卷期 | 8:3 1998.07[民87.07] |
頁次 | 頁713-728 |
分類號 | 521.3 |
語文 | eng |
關鍵詞 | 教育測驗; 常態線性模式; Constructed responses; Normal linear model; Rater reliability; Rescoring; |
英文摘要 | When tests or portions of tests are scored subjectively by raters, a rescoring will yield a change in the ratings of some examinees. In a test with a fixed passing score a rescoring will result in the change of some pass/fail decisions. The number of changes depends on: the reliability of the rating system, the number of raters, the variability in examinee abilities, the proportion of examinees that initially pass, and the policy used to incorporate the rescore into the pass/fail decision. In this study, we provide a model that facilitates the evaluation of various rescoring strategies. We consider and compare the efficiency of three rescoring strategies: (1) rescore everyone, (2) rescore failures only, and (3) rescore within some range of the passing cutoff. These rescoring strategies are evaluated by direct simulation. Additionally we consider the optimal allocation of rescores where the probability someone asks to be rescored is inversely proportional to the distance from their initial score to the cutscore. This allocation is evaluated via numerical integration. A further generalization of the basic model is also considered in which a test is comprised of a mixture of objectively and subjectively scored items. |
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