In this influential study, Steven Pinker develops a new approach to the problem of language learning. Now reprinted with new commentary by the author, this classic work continues to be an indispensable resource in developmental psycholinguistics.Reviews of this book: "The contribution of [Pinker's] book lies not just in its carefully argued section on learnability theory and acquisition, but in its detailed analysis of the empirical consequences of his assumptions." --Paul Fletcher, Times Higher Education Supplement "One of those rare books which every serious worker in the field should read, both for its stock of particular hypotheses and analyses, and for the way it forces one to re-examine basic assumptions as to how one's work should be done. Its criticisms of other approaches to language acquisition.often go to the heart of the difficulties." --Michael Maratsos, Language"[A] new edition, with a new preface from the author, of the influential monograph originally published in 1984 in which Pinker proposed one of the most detailed (and according to some, best) theories of language development based upon the sequential activation of different language-acquisition algorithms. In his new preface, the author reaches the not very modest conclusion that, despite the time elapsed, his continues to be the most complete theory of language development ever developed. A classic of the study of language acquisition, in any case." --Infancia y Aprendizaje [Italy]