The question of how interaction and corrective feedback affect second language (L2) learning has increasingly attracted the interest of researchers in recent years. This book describes the processes involved in interaction-driven second language learning and presents a methodological framework for studying them. A substantial amount of research on interaction has been carried out over the past two decades; the author provides a timely, comprehensive, and up-to-date survey of this significant body of work. In particular, she explores the recent growth in research into the role of cognifitve and social factors in evaluating how interaction works. Researchers, research students, and all those working within the field of second language acquisition will find this book an authoritative and valuable resource.