Review of Psychological factors of peace and war.

no doubt writing on subjects which they have studied exhaustively. Professor Dicks' account of some psychological studies of the German character presents concisely and most intelligibly the fruits of many years' research. Several chapters consist of surveys of recent writing, and experimental work, notably Dr. Eysenck's on War and Aggressiveness and Dr. Himmelweit's on Frustration and Aggression, and these are valuable in themselves, and very readable. On the other hand, the reader will be disappointed with the superficiality of some chapters, which do no more than stir their interest; Professor Cohen's chapter on Women in Peace and War is all too brief, and Dr. Kerr manages to dismiss " personality and attitudes towards warfare " in six pages. The effect of threats on security and the influence of increasing armaments on war are considered by Dr. L. F. Richardson but, apart from holding up the success of Mahatma Gandhi's non-violent technique and some suggestions about intermarriage, the reader is given little idea of any more constructive alternatives. Guide-Lines for Research into International Co-operation are given in some profusion by Dr. G. W. Allport. As a whole, the book is certainly worth reading, and the ideas discussed will set many more in action. The practical importance of the subject is so obvious