Cognitive Psychology Cognitive Psychology Edited by Nick Braisby and Angus Gellatly Oxford University Press in association with The Open University Great Clarendon Street, Oxford OX2 6DP Published by Oxford University Press, Oxford in association with The Open University, Milton Keynes l Oxford University Press is a department of the University of Oxford. It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide in Oxford New York Auckland Bangkok Buenos Aires Cape Town Chennai Dar es Salaam Delhi Hong Kong Istanbul Karachi Kolkata Kuala Lumpur Madrid Melbourne Mexico City Nairobi Sa˜o Paulo Shanghai Taipei Tokyo Toronto Oxford is a registered trade mark of Oxford University Press in the UK and in certain other countries Published in the United States by Oxford University Press Inc., New York The Open University, Walton Hall, Milton Keynes, MK7 6AA First published 2005. Copyright # 2005 The Open University All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, transmitted or utilized in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without written permission from the publisher or a licence from the Copyright Licensing Agency Ltd. Details of such licences (for reprographic reproduction) may be obtained from the Copyright Licensing Agency Ltd of 90 Tottenham Court Road, London W1T 4LP. This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or otherwise circulated without the publisher’s prior consent in any form of binding or cover other than that in which it is published and without similar condition including this condition being imposed on the subsequent purchaser. British Library Cataloguing in Publication Data available. Library of Congress Cataloguing in Publication Data available. Edited, designed and typeset by The Open University. Printed in the United Kingdom by Scotprint, Haddington. ISBN 0-19-927376-6 1.1 Preface This book has been produced as the core text for the Open University’s level 3 course in Cognitive Psychology (DD303). However, it has been designed to serve students taking other courses in cognitive psychology as well, either as essential or recommended reading. There are a number of features of the design of this text that we hope will serve well both students learning about cognitive psychology and educators teaching the subject. Book structure The chapters in this book are organized in five parts. The first four parts focus on broad and well-established topic areas within cognitive psychology, such as perceptual processes and memory. The fifth considers a range of challenges, themes and issues – topics that have been thought to present challenges to the cognitive approach, such as emotion and consciousness; themes such as cognitive modelling and modularity; and issues such as the relation of cognition to biology. The first chapter is not located in one of these parts. It attempts to give a historical and conceptual introduction to cognitive psychology, laying out the foundations of the subject, and raising some of the important themes and issues that are revisited in later chapters. Some of these themes are developed also in the introductions to each of the subsequent parts; we recommend that students read these introductions prior to reading their associated parts, and re-read them afterwards. Chapter structure Each chapter has been structured according to certain conventions. An emboldened term signifies the introduction of a key concept or term that is either explicitly or implicitly defined in the surrounding text. The locations of these defined terms are also flagged in bold in the index. Each chapter contains a number of activities. Often these may be simple thought exercises that may take no more than a minute or so. Others are more involved. Each activity has been integrated into the design of the chapter, and is aimed at enhancing students’ understanding of the material. We recommend that student readers attempt as many of these activities as possible and, where appropriate, revisit them after completing each chapter. The chapters in this book also make use of text boxes. Each box has been written to amplify a particular aspect of the material without interrupting the ongoing narrative. Though the boxes illuminate a wide range of issues, many focus on aspects of research studies and methods. Students may find they wish to finish a section before reading a particular box. Each substantive main section finishes with a section summary, often a bullet point list reminding the student of the key points established in that section. We hope that students will use these as useful barometers of their understanding and re-read sections where the summary points are not clearly understood. Each chapter makes a number of explicit links to other chapters in the book, often to specific numbered sections. It would be tedious in the extreme to continually follow each and every link, flicking to the relevant pages and reading the relevant ‘linked’ section. Rather, these links are intended to help students perceive the interconnected nature of cognitive psychology, identifying connections between topics that otherwise PREFACE might seem disparate. Of course, we hope that students will be motivated to follow some of these links either on first reading, or on a later reading, perhaps as a revision aid. As well as a list of references, each chapter ends with some specific suggestions for further reading. While each chapter is designed to be self-contained, inevitably some issues get less attention than they deserve, and so interested readers may wish to pursue some of these suggestions for a more in-depth treatment. Moreover, it is always worth approaching a topic from more than one direction – consulting different texts, including other general texts on cognitive psychology, can help achieve a richer understanding and we recommend this approach to all students. Supporting a course in cognitive psychology There are few restrictions on how one might use this text to support the teaching of a course in cognitive psychology. The chapters in this book may be tackled in a number of different orders. Depending on the focus of the course, particular parts may be omitted, or particular chapters omitted from a given part or parts. The book as a whole presupposes relatively little prior knowledge of cognitive psychology on the part of a student. However, in some instances, later chapters may presuppose some limited knowledge of related earlier chapters, though this is usually explicitly indicated. Similarly, while all chapters are designed to be taught at the same level, later chapters may tackle issues considered too complex in the earlier chapters. By focusing more on earlier or later chapters, courses can vary somewhat the degree of difficulty of the material they present. Companion volume Accompanying this book is a companion publication Cognitive Psychology: A Methods Companion, also published by Oxford University Press and also designed as a key teaching text for the Open University’s level 3 course in Cognitive Psychology. The M ethods Companion considers in detail a number of key methodological issues in cognitive psychology, including ethics, connectionism, symbolic modelling, neuroimaging, neuropsychology and statistics. Companion web site This book and the Methods Companion are associated with a companion web site that contains much additional material that can be used to further students’ understanding and may be used in presenting a course in cognitive psychology (www.oup.com/uk/booksites/psychology). Materials include electronic versions of figures, experiment and data files, and software for running cognitive models. Acknowledgements Finally, developing the Open University’s level 3 course in Cognitive Psychology (DD303) has been a major undertaking, involving the production of two books, various pieces of software and associated files, audio materials, web sites and web- based materials, and numerous other additional items and activities. To say that such a course, and that this text, could not have been produced without the help and cooperation of a large number of people is an understatement. The following page lists those who have made this enterprise possible, and to each we extend our grateful and sincere thanks, as we do to anyone we have omitted in error. Nick Braisby and Angus Gellatly, Milton Keynes, January 2005 Cognitive Psychology Course Team This book was designed and produced for The Open University course DD303 Cognitive Psychology. The editors gratefully thank all those people, listed below, who have been involved in the process (based at The Open University, unless otherwise stated). CORE COURSE TEAM: Course Chair: Nick Braisby Course Manager: Ingrid Slack Core Team Members: Sandy Aitkenhead; Nicola Brace; Angus Gellatly; Alison J.K. Green; Martin Le Voi; Bundy Mackintosh; Peter Naish; Graham Pike Course Manager (rights): Ann Tolley Course Secretaries: Marie Morris; Elaine Richardson Additional Authors: Jackie Andrade (University of Sheffield); Peter Ayton (City University; Chris Barry (University of Essex); Simon Bignell (University of Essex); Martin A. Conway (University of Durham); Graham Edgar (University of Gloucestershire); Simon Garrod (University of Glasgow); Gareth Gaskell (University of York); Ken Gilhooly (University of Paisley); Olaf Hauk (MRC Cognition and Brain Sciences Unit); Graham J. Hitch (University of York); Emily A. Holmes (MRC Cognition and Brain Sciences Unit); Ashok Jansari (University of East London); Helen Kaye; Paul Mulholland; Mike Oaksford (Cardiff University); Mike Pilling; John Richardson; Andrew Rutherford (Keele University); Anthony J. Sanford (University of Glasgow); Stella Tickle; Tony Stone (London South Bank University); Stuart Watt (Robert Gordon University); Jenny Yiend (MRC Cognition and Brain Sciences Unit) Course Reader: Matt Lambon Ralph (University of Manchester) External Assessor: James Hampton (City University) Media Project Manager: Lynne Downey Production and Presentation Administrator: Richard Golden Copublishing Adviser: Jonathan Hunt Lead Editor: Chris Wooldridge Editors: Alison Edwards; Kathleen Calder; Winifred Power (Freelance) Designers: Tammy Alexander; Alison Goslin; Diane Mole Graphic Artists: Janis Gilbert; Sara Hack Picture Researcher: Celia Hart eMedia Quality Promoter: Roger Moore Software Designers: Ian Every; Maurice Brown; David Morris Rights Adviser: Alma Hales Contracts Executives: Katie Meade; Sarah Gamman Compositors: Pam Berry; Lisa Hale; Phillip Howe Print Buyer Controller: Lene Connolly Assistant Print Buyer: Dave Richings This publication forms part of an Open University course DD303 Cognitive Psychology. Details of this and other Open University courses can be obtained from the Course Information and Advice Centre, PO Box 724, The Open University, Milton Keynes MK7 6ZS, United Kingdom: tel. +44 (0)1908 653231, e-mail [email protected] Alternatively, you may visit the Open University website at http://www.open.ac.uk where you can learn more about the wide range of courses and packs offered at all levels by The Open University. To purchase a selection of Open University course materials visit the webshop at www.ouw.co.uk, or contact Open University Worldwide, Michael Young Building, Walton Hall, Milton Keynes MK7 6AA, United Kingdom for a brochure. tel. +44 (0)1908 858785; fax +44 (0)1908 858787; e-mail [email protected]