"This Encyclopedia is a real treasure trove for language professionals and SLA researchers alike. The range of topics discussed is exceptionally broad, covering both established themes and cutting-edge issues, and the contributors are some of the best-known scholars in the field. Add to this the up-to-date reference lists for each entry and the result is a superb volume that is highly recommended." - Zoltan Dornyei, University of Nottingham, UK "The Encyclopedia of Second Language Acquisition is an excellent new resource that will assist students and researchers in navigating what has become an increasingly diverse field of enquiry. Due to its wide coverage, including articles on such diverse topics as activity theory, Universal Grammar, and statistical techniques, scholars of all theoretical persuasions will want to have this Encyclopedia on their bookshelf." - Alan Juffs, University of Pittsburgh, USA "This encyclopaedia summarises the state-of-the-art of contemporary knowledge on an extraordinary variety of topics covering both theoretical and applied areas in second language acquisition research. It draws on the expertise of the foremost experts in the field. Each entry provides a concise description and is supplemented with the relevant references, which makes it a useful entry point into the topic from which to pursue further inquiry. This is certainly a tool that will be invaluable to academics and practitioners alike and I look forward to using it a lot in the future." - Vera Kempe, University of Abertay Dundee, UK "A comprehensive resource for those new to the field and a useful inclusion in the reference library for those with greater expertise. The list of contributors is impressive - it reads a lot like a 'who's who' of the SLA field. There is also considerable value in many of the references/list of further readings provided with each entry." - Rhonda Oliver, Curtin University, Australia "All in all, this work offers all readers-from teachers to students to researchers-an updated, reliable resource for consulting essential terms and topics in SLA research." - Avizia Yim Long, Indiana University