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Direct linkForthmann, Boris; Grotjahn, Rüdiger; Doebler, Philipp; Baghaei, Purya – Journal of Psychoeducational Assessment, 2020
As measures of general language proficiency, C-tests are ubiquitous in language testing. Speeded C-tests are quite recent developments in the field and are deemed to be more discriminatory and provide more accurate diagnostic information than power C-tests especially with high-ability participants. Item response theory modeling of speeded C-tests…
Descriptors: Item Response Theory, Timed Tests, Language Tests, Goodness of Fit
Eckes, Thomas; Baghaei, Purya – Applied Measurement in Education, 2015
C-tests are gap-filling tests widely used to assess general language proficiency for purposes of placement, screening, or provision of feedback to language learners. C-tests consist of several short texts in which parts of words are missing. We addressed the issue of local dependence in C-tests using an explicit modeling approach based on testlet…
Descriptors: Language Proficiency, Language Tests, Item Response Theory, Test Reliability
