Description:It is inevitable that psychiatry to progress must ever change, develop, acquire new methods and new points of view. Too long there has existed a gulf between psychiatry and psychology. Research psychologists have never seriously taken up the study of the psychology and physiology of properly psychiatric problems, e.g., catatonia, hallucinations. The study of intelligence has been stressed out of all proportion to its practical importance in life. Too little is known of regression and deterioration of intelligence in psychotic persons. On the other hand, medical men and psychiatrists have an inadequate knowledge of psychology and philosophy. The dualistic viewpoint of mind and body still pervades much thinking, although "a mind without concomitant organism to bring it within the range of causality and space and time is utterly inconceivable in any scientific sense." Other fields of science are becoming of value to psychiatry--paleoneurology, biochemistry, occupational therapy, and personal hygiene. It is for the psychiatrist to use every available aid and contribution to his science.