Choose one of the schools of thought that was introduced in the readings and in the Current Psychological Schools of Thought presentation—the mental testing movement, functionalism, behaviorism, neobehaviorism, or psychoanalysis—that you have not yet written about in another discussion assignment. Remember that psychoanalysis refers to a comprehensive theory about human nature and not to the psychotherapeutic approach. What new principles and values did the school of thought bring to psychology? What new ideas, practices, and methods were introduced? Discuss some of the key developments within the school of thought over the course of time, in terms of research methods or other applied methods.