认知诊断计算机自适应测试中测量精度与属性覆盖率平衡的新方法。

IF 1 4区 心理学 Q4 PSYCHOLOGY, MATHEMATICAL
Applied Psychological Measurement Pub Date : 2021-10-01 Epub Date: 2021-09-15 DOI:10.1177/01466216211040489
Xiaojian Sun, Björn Andersson, Tao Xin
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引用次数: 1

摘要

认知诊断计算机自适应测试(CD-CAT)作为认知诊断评估的重要研究领域之一,近年来受到了广泛的关注。测量精度是CD-CAT研究的主题,其中项目选择方法和属性覆盖对测量精度有重要影响。本文引入了一种新的属性覆盖率指标——测试长度与属性数之比(RTA)。当项目池包含许多测量多个属性的项目时,RTA是合适的,它既可以产生可接受的测量精度,又可以平衡属性覆盖率。通过仿真,将新指标与已有研究提出的原始项目选择法(ORI)和属性平衡指数(ABI)进行了比较。结果表明:(1)在大多数项目选择方法下,RTA方法的测量精度与ORI方法相当;(2)除互信息项目选择方法外,RTA方法在大多数项目选择方法中的测量精度均高于ABI方法;(3)与ORI和ABI方法相比,RTA方法更倾向于度量多个属性的条目,而ABI方法更倾向于度量单个属性的条目;(4) RTA方法在属性覆盖率方面优于ORI方法,而在长时间测试方面优于ABI方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Method to Balance Measurement Accuracy and Attribute Coverage in Cognitive Diagnostic Computerized Adaptive Testing.

As one of the important research areas of cognitive diagnosis assessment, cognitive diagnostic computerized adaptive testing (CD-CAT) has received much attention in recent years. Measurement accuracy is the major theme in CD-CAT, and both the item selection method and the attribute coverage have a crucial effect on measurement accuracy. A new attribute coverage index, the ratio of test length to the number of attributes (RTA), is introduced in the current study. RTA is appropriate when the item pool comprises many items that measure multiple attributes where it can both produce acceptable measurement accuracy and balance the attribute coverage. With simulations, the new index is compared to the original item selection method (ORI) and the attribute balance index (ABI), which have been proposed in previous studies. The results show that (1) the RTA method produces comparable measurement accuracy to the ORI method under most item selection methods; (2) the RTA method produces higher measurement accuracy than the ABI method for most item selection methods, with the exception of the mutual information item selection method; (3) the RTA method prefers items that measure multiple attributes, compared to the ORI and ABI methods, while the ABI prefers items that measure a single attribute; and (4) the RTA method performs better than the ORI method with respect to attribute coverage, while it performs worse than the ABI with long tests.

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来源期刊
CiteScore
2.30
自引率
8.30%
发文量
50
期刊介绍: Applied Psychological Measurement publishes empirical research on the application of techniques of psychological measurement to substantive problems in all areas of psychology and related disciplines.
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