A critical review of research relating to the learning, use and effects of additional and multiple languages in later life

While there is a growing body of research on second language acquisition (SLA) in children, adolescents, young and more mature adults, much remains to be explored about how adults in later life learn a new language and how good additional language learning is for them . Our goal in this article is to survey and evaluate what is known about the linguistic, socio-affective, neurobiological and cognitive underpinnings of the second language (L2)...