This volume provides a state-of-the-art overview of contemporary second language acquisition from a linguistic point of view.

The term “crosscurrent” is defined as “a current flowing counter to another.” This volume represents crosscurrents in second language acquisition and linguistic theory in several respects. First, although the main currents running between linguistics and second language acquisition have traditionally flowed from theory to application, equally important contributions can be made in the other direction as well. Second, although there is a strong tendency in the field of linguistics to see “theorists” working within formal models of syntax, SLA research can contribute to linguistic theory more broadly defined to include various functional as well as formal models of syntax, theories of phonology, variationist theories of sociolinguists, etc. These assumptions formed the basis for a conference held at Stanford University during the Linguistic Institute there in the summer of 1987. The conference was organized to update the relation between second language acquisition and linguistic theory. This book contains a selection of (mostly revised and updated) papers of this conference and two newly written papers.

Suzanne Flynn and Wayne O'Neil Massachusetts Institute of Technology I. INTRODUCTION The theory of Universal Grammar (UG) as explicated e. g. in Chomsky, 1986, has led to explosive developments in the study of natural language as well as to significant advances in the study of first language (L I) acquisition. Most recently. the theory of UG has led to important theore tical and empirical advances in the field of adult second language (L2) acquisition as well. The principle impetus for this development can be traced to the work in linguistics which shifted the study "from behavior or the products of behavior to states of the mind/brain that enter into behavior" (Chomksy. 1986:3). Grammars within this framework are conceived of as theoretical accounts of "the state of the mind/brain of the person who knows a particular language" (Chomsky. 1986:3). Research within fields of language acquisition seeks to isolate and specify the properties of the underlying competence necessary for language learning. Full development of a theory of UG demands study and understanding of the nature of both the formal properties of language and of the language acquisition process itself. However. while there is a tradition of debate and dialogue established between theoretical linguistics and Ll acquisition research. relatively few connections have been made between linguistic theory and L2 acquisition research.

A volume on second-language acquisition theory and pedagogy is, at the same time, a mark of progress and a bit of an anomaly. The progress is shown by the fact that the two disciplines have established themselves as areas of study not only distinct from each other, but also different from linguistic theory. This was not always the case, at least not in the United States. The anomaly results from the fact that this book deals with the relationship between L2 theory and pedagogy despite the conclusion that there is currently no widely-accepted theory of SLA. Grouped into five sections, the papers in this volume: * consider questions about L2 theory and pedagogy at the macro-level, from the standpoint of the L2 setting; * consider input in terms of factors which are internal to the learner; * examine the question of external factors affecting the input, such as the issue of whether points of grammar can be explicitly taught; * deal with questions of certain complex, linguistic behaviors and the various external and social variables that influence learners; and * discuss issues surrounding the teaching of pronunciation factors that affect a non-native accent.

The second edition of Theories in Second Language Acquisition seeks to build on the strengths of the first edition by surveying the major theories currently used in second language acquisition research. This volume is an ideal introductory text for undergraduate and graduate students in SLA and language teaching. Each chapter focuses on a single theory, written by a leading scholar in the field in an easy-to-follow style – a basic foundational description of the theory, relevant data or research models used with this theory, common misunderstandings, and a sample study from the field to show the theory in practice. This text is designed to provide a consistent and coherent presentation for those new to the field who seek basic understanding of theories that underlie contemporary SLA research. Researchers will also find the book useful as a "quick guide" to theoretical work outside their respective domains.

This third edition of the best-selling Theories in Second Language Acquisition surveys the major theories currently used in second language acquisition (SLA) research, serving as an ideal introductory text for undergraduate and graduate students in SLA and language teaching. Designed to provide a consistent and coherent presentation for those seeking a basic understanding of the theories that underlie contemporary SLA research, each chapter focuses on a single theory. Chapters are written by leading scholars in the field and incorporate a basic foundational description of the theory, relevant data or research models used with this theory, common misunderstandings, and a sample study from the field to show the theory in practice. New to this edition is a chapter addressing the relationship between theories and L2 teaching, as well as refreshed coverage of all theories throughout the book. A key work in the study of second language acquisition, this volume will be useful to students of linguistics, language and language teaching, and to researchers as a guide to theoretical work outside their respective domains.

This volume explores how a second language is acquired and what learners must do in order to achieve proficiency. The hardback edition is a collection of original essays that approaches second language acquisition from a linguistic rather than a sociological, psychological, or purely pedagogical perspective. A wide range of viewpoints and approaches is represented. However, all authors agree on the fundamental importance of linguistic theory in the study of second language acquisition. Few works have explored in depth how a second language is acquired and what the second language learner must do mentally to achieve proficiency in another language. The essays in this book provide an incisive analysis of these questions. For greater accessibility, the chapters are arranged topically from those covering the broad area of theories of acquisition to those focusing specifically on syntax, semantics, pragmatics, lexicon, and phonology in another language.

This book examines child second language acquisition within the Principles and Parameters theory of Universal Grammar (UG). Specifically, the book focuses on null-subjects in the developing grammars of children acquiring English as a second language. The book provides evidence from the longitudinal speech data of four child second language (L2) learners in order to test the predictions of a recent theory of null-subjects, namely, the Morphological Uniformity Principle (MUP). Lakshmanan argues that the child L2 acquisition data offer little or no evidence in support of the MUP s predictions regarding a developmental relation between verb inflections and null-subjects. The evidence from these child L2 data indicates that regardless of the status of null subjects in their first language, child L2 learners of English hypothesize correctly from the very beginning that English requires subjects of tensed clauses to be obligatorily overt. The failure on the part of these learners to obey this knowledge in certain structural contexts is the result of perceptual factors that are unrelated to parameter setting. The book demonstrates the value of child second language acquisition data in evaluating specific proposals within linguistic theory for a Universal principle.

This book provides a snapshot of the field of language acquisition at the beginning of the 21st Century. It represents the multiplicity of approaches that characterize the field and provides a review of current topics and debates, as well as addressing some of the connections between sub-fields and possible future directions for research.

This volume brings together theoretical perspectives and empirical studies in second language (L2) acquisition and bilingualism and discusses their implications for L2 pedagogy. The book is organized into three sections that focus on prominent linguistic and cognitive theories and together provide a compelling set of state-of-the-art works. Part I consists of studies that give rise to innovative applications for second language teaching and learning and Part II discusses how findings from cognitive research can inform practices for L2 teaching and learning. Following these two sections, Part III provides a summative commentary of the theories explored in the volume along with suggestions for future research directions. The book is intended to act as a valuable reference for scholars, applied linguists, specialists in pedagogy, language educators, and anyone wishing to gain an overview of current issues in SLA and bilingualism.