Hugo Münsterberg, the German-American applied psychology pioneer, discusses the practical applications of modern psychology. In the PREFACE, he writes: "The chief aim of this book is twofold. It is a negative one: I want to counteract the misunderstandings which overflood the whole field, especially by the careless mixing of mental and moral influence. And a positive one: I want to strengthen the public feeling that the time has come when every physician...