The Problems of abnormal psychology are as manifold as the problems of modern life.  To understand the origins and manifestations of the psychoses that afflict us, we must come to a better comprehension of the biological and social factors involved.  This handbook gives an all-inclusive view of the interrelationship of mental diseases to the forces in modern life which cause them.  Here eminent authorities speak in non-technical terms to the layman, that he may better understand the causes and consequences of a maladjusted mental equipment.