The significance of this task is to be realized only when one considers the general import of the functional psychoses. They are, biologically, failures of adaptation. The chronic and deteriorating cases give up the struggle permanently, while the temporary insanities lay bare the soul of man as he catches a glimpse of unreality but turns back to face the world as it is. When one realizes that emotional disturbances are characteristic of the benign psychoses, it is easy to imagine how much such studies
may ultimately illuminate the problems of normal life.
The technical value of this work to psychiatry is more immediate. Kraepelin laid the foundations for systematic classification with his dementia præcox and manic-depressive groups. But the rigidity of the latter, allegedly descriptive, term has confused the problem of classifying many benign psychoses. It was Hoch's ambition to prove that, although elation and depression were the commonest mood anomalies in this group, they had no more theoretic importance than anxiety, distressed perplexity or apathy. These other moods, although less frequent, are just as characteristic of the psychoses in this group. In other words, the name "Anxiety-Apathy Insanity" would be as appropriate, theoretically, as Kraepelin's term. In 1919 Hoch and Kirby published a report on the perplexity cases. This present book was designed to show that the symptom complex centering around apathy is as distinct as that which is recognized by all psychiatrists as mania with its predominant characteristic of elation.
In 1917 ill health forced Dr. Hoch to resign from his official duties. He retired to California with the purpose of adding to psychiatric literature the fruits of his long experience and unrivaled judgment. His first task was this book. In the midst of this work came a sudden collapse. As I had been in close touch with his researches, coöperating in psychological speculations, and was free to devote
some time to it, he asked shortly before his death that I complete the book. This obligation is incommensurate with the debt I owe for years of inspiration, tuition and criticism.
The task has been mainly literary. I found the first five chapters practically completed, while it has not been difficult, as a rule, to discover from his copious notes what his intentions were as to the details of the following chapters. I have been greatly aided by the assistance of Dr. Adolf Meyer and of Dr. Kirby. The latter has been good enough to read the entire manuscript, making invaluable suggestions and criticisms.
John T. MacCurdy.
New York.