Testlets are subsets of test items that are based on the same stimulus and are administered together. Tests that contain testlets are in widespread use in language testing, but they also share a fundamental problem: Items within a testlet are locally dependent with possibly adverse consequences for test score interpretation and use. Building on…

Research on rater effects in language performance assessments has provided ample evidence for a considerable degree of variability among raters. Building on this research, I advance the hypothesis that experienced raters fall into types or classes that are clearly distinguishable from one another with respect to the importance they attach to…

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…

Contributions from seven European countries pinpoint major projects, problems, and prospects of reforming public language assessment procedures. Each country has faced unique problems in the reform process, yet there have also been several common themes emerging, such as a focus on multilingualism, communicative skills, standardization, reference…