Psychology considered as the science of human behavior is concerned with man's response to the impressions made upon him by objects, people, and events. They make up the situations that he meets. Behavior--the individual's way of dealing with these situations--if not a complete failure, results finally in some sort of adjustment to the conditions in which one lives; and this adjustment culminates in social and moral habits, in habits of work, in ways of thinking and acting; in short, in habits of life. And through all the adapting process runs the influence of physiological conditions, and...