Revision Guide25CambridgeYEARSAssWITHInternational AS and A LevelPsychologySECOND EDITIONDavid ClarkeNEW for2018syllabusHODDEREDUCATIONRevision GuideCambridgeInternational AS and A LevelPsychologyDavid ClarkeHODDEREDUCATIONLEARN MOREIn memory of HabacucEm memoria de HabacucFor Tatiana and all my family and friends in Brazil withPara Tatiana e toda a minha familia e amigos no Brasillove and affection.com amor e carinho.Every effort has been made to trace all copyright holders,but if any have been inadvertently overlooked thePublishers will be pleased to make the necessary arrangements at the first opportunity.Although every effort has been made to ensure that website addresses are correct at time of going to press HodderEducation cannot be held responsible for the content of any website mentioned in this book.It is sometimes possibleto find a relocated web page by typing the address of the home page for a website in the URL window of yourbrowser.Hachette UK's policy is to use papers that are natural,renewable and recyclable products and made from woodgrown in sustainable forests.The logging and manufacturing processes are expected to conform to the environmentalregulations of the country of originOrders:please contact Bookpoint Ltd,130 Park Drive,Milton Park Abingdon,Oxon OX14 4SE.Telephone(44)01235827720.Fax(4401235400401.Emait education@bookpointco.uk Lines are open from 9a.m to 5 p.m.Monday to Saturday,with a 24hour messageanswering service You can also order through our website:wwwhoddereducationcom15BN9781510418394©David Clarke2017First published in 2017 byHodder Education,An Hachette UK Company50 Victoria EmbankmentImpression number 10 98 76 5 4 32 1Year20212020201920182017All rights reserved Apart from any use permitted under UK copyright law,no part of this publication may bereproduced or transmitted in any form or by any means,electronic or mechanical,including photocopying andrecording,or held within any information storage and retrieval system,without permission in writing from thepublisher or under licence from the Copyright Licensing Agency Limited.Further details of such licences (forreprographic reproduction)may be obtained from the Copyright Licensing Agency Limited,www.claco.ukCover photo Zhitkov Boris/ShutterstockTypeset by Integra Software Services Pvt.Ltd,Pondicherry,IndiaPrinted in SpainA catalogue record for this title is available from the British Library.