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Eckes, Thomas; Jin, Kuan-Yu – International Journal of Testing, 2021
Severity and centrality are two main kinds of rater effects posing threats to the validity and fairness of performance assessments. Adopting Jin and Wang's (2018) extended facets modeling approach, we separately estimated the magnitude of rater severity and centrality effects in the web-based TestDaF (Test of German as a Foreign Language) writing…
Descriptors: Language Tests, German, Second Languages, Writing Tests
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Levy, Roy; Mislevy, Robert J. – International Journal of Testing, 2004
The challenges of modeling students' performance in computer-based interactive assessments include accounting for multiple aspects of knowledge and skill that arise in different situations and the conditional dependencies among multiple aspects of performance. This article describes a Bayesian approach to modeling and estimating cognitive models…
Descriptors: Computer Assisted Testing, Markov Processes, Computer Networks, Bayesian Statistics