In contrast with the assumptions made in standard measurement models used in large-scale assessments, students' performance may change during the test administration. This change can be modeled as a function of item position in case of a test booklet design with item-order manipulations. The present study used an explanatory item response theory (IRT) framework to analyze item position effects in the 2012 European Survey on Language Competences. Consistent item position effects were found for listening but not for reading. More specifically, for a large subset of items, item difficulty decreased along with item position, which is known as a "practice effect." The effect was found across all tested languages, although the effect sizes varied across items, test levels, and countries.