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The role of different test context in computerized scenario-based assessment
The purpose of the paper is to provide comparability evidence of different forms of Performancebased task aimed at measuring critical thinking skill. PBT “Aquarium” include three texts with the same key-sentences, but additional (non-key) sentences are vary. For the psychometric analysis, we consider three texts as three forms of the same task. Additional sentences and characteristics of the interface are considered as test context. To check the comparability of the forms we use classical equating methods and DIF-analysis. Moreover, we cross-validate the results using item response theory modeling (IRT).
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