Do Multiple-Choice Options Inflate Estimates of Vocabulary Size on the VST?
Do Multiple-Choice Options Inflate Estimates of Vocabulary Size on the VST?
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多项选择选项是否会夸大 VST 词汇量的估计值？
DOI：
10.1080/15434303.2014.922977
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发表时间：
2014
影响因子：
2.9
通讯作者：
J. Stewart
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文献类型：
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作者：
J. Stewart
在Rasch框架下（Beglar, 2010），词汇量测试（VST） （Nation & Beglar, 2007）是第二语言习得领域中越来越受欢迎的去语境化书面接受性词汇量测量方法。然而，尽管验证表明该测试具有很高的内部信度，但仍未解决的是，由于多项选择格式中固有的猜测效应，它高估了学习者词汇量的可能性，因为大小估计是通过将原始分数乘以一个常数（100或200）来完成的。本文认为，VST的多项选择格式导致被动识别单词的测试不能接近真实英语文本读者的经验，详细介绍了Rasch框架和均方拟合统计在检测猜测效应对原始测试分数的总体贡献方面的缺点，这些缺点可能使这些缺陷在测试验证过程中未被发现。概述了多项选择题形式给词汇测试带来的挑战，最后提出了可以解决这些问题的测试和分析方法。
Validated under a Rasch framework (Beglar, 2010), the Vocabulary Size Test (VST) (Nation & Beglar, 2007) is an increasingly popular measure of decontextualized written receptive vocabulary size in the field of second language acquisition. However, although the validation indicates that the test has high internal reliability, still unaddressed is the possibility that it overestimates learner vocabulary size due to guessing effects inherent in its multiple-choice format, as size estimates are made by multiplying its raw score by a constant (100 or 200). This article argues that the VST’s multiple-choice format results in a test of passive recognition of words that does not approximate the experience of readers of authentic English texts, details drawbacks of the Rasch framework and mean-square fit statistics in detecting the overall contribution of guessing effects to raw test scores that could have allowed such deficiencies to remain undetected during the test’s validation, overviews challenges that multiple-choice formats pose for vocabulary tests, and concludes by proposing methods of testing and analysis that can address these concerns.
应用环境Microkiol.50 -6。
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