The Preface “It has always seemed to me a particular duty of the psychologist from time to time to leave his laboratory and with his little contribution to serve the outside interests of the community. Our practical life is filled with psychological problems which have to be solved somehow, and if everything is left to commonsense and to unscientific fancies about the mind, confusion must result, and the psychologist who stands aloof will be to blame.
Hence I tried in my little book On the Witness Stand to discuss for those interested in law the value of exact psychology for the problems of the courtroom. In Psychotherapy I showed the bearing of a scientific study of the mind on medicine. In Psychology and the Teacher I outlined its consequences for educational problems. In Psychology and Industrial Efficiency I studied the importance of exact psychology for commerce and industry. And I continue this series by the present little volume, which speaks of psychology's possible service to social sanity. I cannot promise that even this will be the last, as I have not yet touched on psychology's relation to religion, to art, and to politics.
The field which I have approached this time demanded a different kind of treatment from that in the earlier books. There I had aimed at a certain systematic completeness. When we come to the social questions, such a method would be misleading, as any systematic study of these psychological factors is still a hope for the future. Many parts of the field have never yet been touched by the plow of the psychologist. The only method which seems possible to-day is to select a few characteristic topics of social discussion and to outline for each of them in what sense a psychologist might contribute to the solution or might at least further the analysis of the problem. The aim is to show that our social difficulties are ultimately dependent upon mental conditions which ought to be cleared up with the methods of modern psychology.”
