During the past decade, John Schumann and his colleagues at UCLA have been pursuing a novel line of research by examining SLA from a neurobiological perspective. Several articles have reported on various phases of this extended program and now The neurobiology of affect in language offers a comprehensive summary of Schumann's theory. As suggested by the title, affect in this book is seen as central to the understanding of SLA. This is because, as the author argues, SLA is emotionally driven and emotion underlies most, if not all, cognition.