Jason Rothman is Professor of Linguistics at Universitetet i Tromsø ¿ Norges arktiske universitet and Universidad Nebrija in Madrid, Spain.

1. Setting the context; 2. Theoretical approaches to sequential multilingualism; 3. Multilingual lexis (acquisition and processing) and phonology; 4. Transfer in multilingual morphosyntax; 5. A review of published work; 6. Moving on and going forward in L3/Ln acquisition.