Messung experimenteller Kompetenz – ein computergestützter Experimentiertest

Teaching students the necessary skills to plan, perform and analyze experiments is a major aim of physics instruction. In large-scale-assessments, however, these skills are hardly assessed. A main reason is a lack of assessment instruments that can efficiently and reliably assess these skills, in-cluding the performance of experiments. In order to close this gap, in this paper, we present a completely computer-based test that assesses students’ experimental skills in mechanics, electricity and optics, taking up typical student experiments in these areas. The test builds on interactive sim-ulations that resemble the set-up and performance of real experiments. The scoring is computer-based and partially automated. Results of a large-scale-study with more than 1.100 students sug-gest that the test can efficiently be used in the large scale. Across all items, internal consistency was found to be at least good. The item difficulties can be interpreted plausibly.