2 JUNE 1923, Page 21

PSYCHOLOGY AND SCIENCE.

Problems in Dynamic Psychology. By John T. MacCurdy. (Cambridge : at the University Press. 12a. 6d. net.) Problems in Dynamic Psychology. By John T. MacCurdy. (Cambridge : at the University Press. 12a. 6d. net.) In the author's words, "Dynamic' psychology is a useful term which covers the instincts, motives, emotions and imaginative (or autistic) thinking, as opposed to the more static functions of attention, perception, memory, and similar conscious logical processes." Dr. MacCurdy has had wide experience in the study of mental disease, and in particular has concentrated on those graver aberrations known as psychoses in contradistinction to the psycho-neuroses which are of a milder nature. Briefly, the book has a double objective. On the one hand, it is destructive, in that it seeks to show by severe and arduous critical examination where the Freudian system needs reconstruction on a broader basis ; on the other, it is constructive in its formulation of suggestions for the fulfilment of this need. The practical value of the essay is much enhanced by the fact that the generalizations are not merely academic, but have been tested by application to clinical problems over a considerable number of years.