ABSTRACT
In spite of the widespread popular interest in psychology and of the rapid growth in recent years of university departments devoted to instruction and research in psychology, the science is still in some respects in a very unsatisfactory condition. Psychologists are divided by differences of opinion on many questions that affect profoundly their ways of conceiving the science, its problems and its methods. The most fundamental of such divergences was discussed in the introductory chapter. It is well that the student should have from the outset some acquaintance with others of these deep-going differences. I shall, therefore, very briefly state my own view of the principal problems, departments and methods of psychology and indicate the peculiarities of other authors and schools.
