The volume provides a state-of-the-art overview of key issues in second language learning and teaching, adopting as a point of reference both psycholinguistic and sociolinguistic perspectives. The papers included in the collection, which have been contributed by leading specialists in the field from Poland and abroad, touch upon important theoretical issues, report latest research findings and offer guidelines for classroom practice. The range of topics covered and the inclusion of concrete pedagogic proposals ensures that the book will be of interest to a wide audience, not only SLA specialists, but also methodologists, material designers, undergraduate and graduate students, and practitioners