Refining the two-parameter testlet response model by introducing testlet discrimination parameters
نویسندگان
چکیده
منابع مشابه
Random parameter structure and the testlet model: extension of the Rasch testlet model.
The current Rasch testlet model (RT) assumes independence of the testlet effect and the target dimension. This article investigated the impact of the violation of that assumption on RT and the performance of an extended Rasch testlet model (ET) in which the random parameter variance-covariance matrix is estimated without any constraints. Our simulation results showed that ET was the same or sup...
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Standardized tests often group items around a common stimulus. Such groupings of items are called testlets. The potential dependency among items within a testlet is generally ignored in practice, even though a basic assumption of item response theory (IRT) is that individual items are independent of one another. A technique called tree-based regression (TBR) was applied to identify key features...
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Multidimensional adaptive testing (MAT) is a highly efficient method for the simultaneous measurement of several latent traits. Currently, no psychometrically sound approach is available for the use of MAT in testlet-based tests. Testlets are sets of items sharing a common stimulus such as a graph or a text. They are frequently used in large operational testing programs like TOEFL, PISA, PIRLS,...
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ژورنال
عنوان ژورنال: Japanese Psychological Research
سال: 2012
ISSN: 0021-5368
DOI: 10.1111/jpr.12002