Penguin Books Ltd, Harmondsworth, Middlesex, England Penguin Books Inc, 3300 Clipper Mill Road, Baltimore 11, Md, U.S.A. Penguin Books Australia Ltd, Ringwood, Victoria, Australia
First published by Penguin Books 1965
Copyright © H. J. Eysenck, 1965
Made and printed in Great Britain by C. Nicholls & Company Ltd Set in Monotype Baskerville
This book is sold subject to the condition that shall not, by way of trade, be lent, re-sold, hired out, or otherwise disposed of without the publisher’s consent, in any form of binding or cover other than that in which it is published