New Directions In Language Development And Disorders

Research into child language development is being conducted more extensively, by more people, and in more countries throughout the world than at any point in the past. We now know more than we ever did before about the linguistic, cognitive, neurobio­ log

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NEW DIRECTIONS IN LANGUAGE DEVELOPMENT AND DISORDERS

Edited by

Michael Perkins and

Sara Howard University of Sheffield Sheffield, England

SPRINGER SCIENCE+BUSINESS MEDIA, LLC

Library of Congress Cataloging-in-Publication Data New directions in language development and disorders / edited by Michael Perkins and Sara Howard, p. cm. "Proceedings of the Child Language Seminar 1998 held Sept. 4-6, 1998, in Sheffield, England"«T.p. verso. Includes bibliographical references and index. ISBN 978-1-4613-6865-6 ISBN 978-1-4615-4157-8 (eBook) DOI 10.1007/978-1-4615-4157-8 1. Language acquisition-Congresses. 2. Language disorders-Congresses. I. Perkins, Michael. II. Howard, Sara. III. Child Language Seminar. PI 18 .N49 1999 40r.93»dc21

99.047340

Proceedings of the Child Language Seminar 1998, held September 4-6, 1998, in Sheffield, England ISBN 978-1-4613-6865-6 © 2000 Springer Science+Business Media New York in 2000 Originally published by Kluwer Academic / Plenum Publishers, New York in 2000 Softcover reprint of the hardcover 1st edition 2000 10

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All rights reserved No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without written permission from the Publisher

In Memory of Nicky Wass 1969-1999

PREFACE

Research into child language development is being conducted more extensively, by more people, and in more countries throughout the world than at any point in the past. We now know more than we ever did before about the linguistic, cognitive, neurobiological, and social capacities that children bring to their language learning task, as well as the ways in which these capacities interact with a whole range of factors present in the child's environment throughout the learning process, not least the particular characteristics of the language or languages to which the child is exposed. Far from inducing a sense of complacency, this new knowledge seems instead to create an even stronger impetus to know more. This is partly because of the new and unforeseen questions it raises and partly because of competition between different theories to provide the best explanation of the phenomenon, and which in turn engender different methods of enquiry. This volume addresses many of the key issues which are currently exercising the minds of child language researchers, and which are likely to motivate research for some years to come. The chapters included here-all previously unpublished-present a great deal of new data and address a range of theoretical issues from a variety of perspectives. One theme which has been given particular emphasis, and is amply represented either directly or indirectly in many of the chapters, is the nature of language acquisition in children whose language learning capacity is in some way impaired. As well as being of interest in its own right, it is our view that a better understanding of impaired language development can throw a great deal of lig