This article focuses on rater severity and consistency and their relation to major changes in the rating system in a high-stakes testing context. The study is based on longitudinal data collected from 2009 to 2019 from the second language (L2) Finnish speaking subtest in the National Certificates of Language Proficiency in Finland. We investigated…

Derivational morphology (DM) and how it can be assessed have been investigated relatively rarely in language learning and testing research. The goal of this study is to add to the understanding of the nature of DM knowledge, exploring whether and how it is separable from vocabulary breadth. Eight L2 (second or foreign language) English DM…

Analyzes gender-uniform differential item functioning (DIF) in a second language vocabulary test with the tools of item response theory to study potential gender impact on the test performance measured by different item composites. Results show that while there are test items with indications of DIF in favor of either females or males, the test as…