This is a reprinted version in China, it is the same as the original except the fronter matters.
This thorough introduction to second language research provides a comprehensive review of the research into learner language, internal and external factors in language acquisition, individual differences, and classroom second language learning.
This is irrefutably the most comprehensive book on the subject matter. It is meticulously researched, well written and most importantly well structured. Never have I seen such an accomplishment in study of S.L.A. Ellis brilliantly dissects the dominating studies in the field. Moreover, he also presents their weaknesses and strengths. Interesting questions like the effect of formal instruction on language acquisition, the existence of a "critical period" in S.L.A are thoroughly discussed and commented on. In fact, everything you need to know about S.L.A can be found in this book.