A closer look at the construct validity of C-tests
A closer look at the construct validity of C-tests
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仔细研究 C 测试的构造有效性
DOI：
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发表时间：
2006
期刊：
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通讯作者：
Rüdiger Grotjahn
中科院分区：
文献类型：
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作者：
T. Eckes;Rüdiger Grotjahn
C 测试实际衡量的是什么一直是多年来争论的问题。在本研究中，作者检验了 C 测试衡量一般语言能力的假设。来自四个独立样本的总共 843 名参与者参加了德语 C 测试以及 TestDaF（德语作为外语的测试）。 Rasch 测量模型和验证性因子分析提供了明确的证据，表明所讨论的 C 测试是一种高度可靠的一维工具，它测量与德福考试四个部分相同的一般维度：阅读、听力、写作和口语。此外，作者表明，语言能力可以分为更具体的结构，并且考生的能力水平对 C 测试表现有不同的影响。这些发现对 C 检验测量结构的多元性和流动性具有影响。
What C-tests actually measure has been an issue of debate for many years. In the present research, the authors examined the hypothesis that C-tests measure general language proficiency. A total of 843 participants from four independent samples took a German C-test along with the TestDaF (Test of German as a Foreign Language). Rasch measurement modelling and confirmatory factor analysis provided clear evidence that the C-test in question was a highly reliable, unidimensional instrument, which measured the same general dimension as the four TestDaF sections: reading, listening, writing and speaking. Moreover, the authors showed that language proficiency was divisible into more specific constructs and that examinee proficiency level differentially influenced C-test performance. The findings have implications for the multicomponentiality and fluidity of the C-test measurement construct.