oa Hoe groot is het verschil tussen B1 en B2? - Verschillen in kennis van woordenschat en grammatica tussen NT2-leerders op B1-B2-niveau van spreekvaardigheid

This study examined lexical and grammatical knowledge of adult learners of Dutch as a second language (L2) at the B1 and B2 speaking-proficiency levels of the Common European Framework of Reference for Languages. In a sample of 208 Dutch L2 learners, 80 and 30 participants were found to be proficient in speaking at the B1 and B2 levels respectively, as assessed in eight computer-administered speaking tasks. Participants also performed paper-and-pencil tests of vocabulary and grammar knowledge. Average vocabulary sizes were obtained of 4000 and 7000 words (with standard deviations of 1623 and 1456) in the B1 and B2 groups, respectively. Overall performance on the grammar test, which assessed knowledge in ten grammatical domains, was significantly higher in the B2 group than in the B1 group, with average correct scores of 86% and 71%, respectively. For each of the ten domains of grammar, examples are given of features that B1 and B2 learners did, or did not yet, control.1