文章基本信息

标题：Matrix Sampling of Items in Large-Scale Assessments
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作者：Ruth A. Childs ; Andrew P. Jaciw
期刊名称：Practical Assessment, Research and Evaluation
印刷版ISSN：1531-7714
电子版ISSN：1531-7714
出版年度：2003
卷号：8
出版社：ERIC: Clearinghouse On Assessment and Evaluation
摘要：Matrix sampling of items – that is, division of a set of items into different versions of a test form – is used by several large-scale testing programs. Like other test designs, matrixed designs have both advantages and disadvantages. For example, testing time per student is less than if each student received all the items, but the comparability of student scores may decrease. Also, curriculum coverage is maintained, but reporting of scores becomes more complex. In this paper, matrixed designs are compared with more traditional designs in nine categories of costs: development costs, materials costs, administration costs, educational costs, scoring costs, reliability costs, comparability costs, validity costs, and reporting costs. In choosing among test designs, a testing program should examine the costs in light of its mandate(s), the content of the tests, and the financial resources available, among other considerations.