Foreign Language Education in Multilingual Classrooms

An eminent question in current discussions of cross-linguistic transfer concerns the role of previously acquired languages for the learning and acquisition of subsequent languages. While for monolinguals learning a second language it seems obvious that all cross-linguistic influence must be traceable to the first language, the source of cross-linguistic influence is much harder to pin down in bilingual and multilingual constellations, as all previously acquired languages can in principle interac