First published in 1926 by Kegan Paul, Trench, Trubner & Co., Ltd. To purchase your own copy of this or any of Taylor & Francis or Routledge's collection of thousands of eBooks please go to www.eBookstore.tandf.co.uk Reprinted in 1999 by Routledge 11 New Fetter Lane, London EC4P 4EE Printed and Bound in Great Britain © 1926 R G Gordon All rights reserved. No part of this book may be reprinted or reproduced or utilized in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers. The publishers have made every effort to contact authors/copyright holders of the works reprinted in the International Library of Psychology. This has not been possible in every case, however, and we would welcome correspondence from those individuals/companies we have been unable to trace. These reprints are taken from original copies of each book. Iin many cases the condition of these originals is not perfect. The publisher has gone to great lengths to ensure the quality of these reprints, but wishes to point out that certain characteristics of the original copies will, of necessity, be apparent in reprints thereof. British Library Cataloguing in Publication Data A CIP catalogue record for this book is available from the British Library Personality ISBN 0415-21057-7 Individual Differences: 21 Volumes ISBN 0415-21130-1 The International Library of Psychology: 204 Volumes ISBN 0415-19132-7 -iv- |