In 1945, he was invited to set up a counselling center at the University of Chicago. In 1947 he was elected President of the American Psychological Association. While a professor of psychology at the University of Chicago (1945–57), Rogers helped to establish a counselling center connected with the university and there conducted studies to determine the effectiveness of his methods. His findings and theories appeared in "Client-Centered Therapy" (1951) and "Psychotherapy and Personality Change" (1954). One of his graduate students at the University of Chicago, Thomas Gordon, established the Parent Effectiveness Training (P.E.T.) movement. Another student, Eugene T. Gendlin, who was getting his Ph.D. in philosophy, developed the practice of Focusing based on Rogerian listening. In 1956, Rogers became the first President of the American Academy of Psychotherapists. He taught psychology at the University of Wisconsin, Madison (1957–63), during which time he wrote one of his best-known books, "On Becoming Person" (1961). A student of his there, Marshall Rosenberg, would go on to develop Nonviolent Communication. Carl Rogers and Abraham Maslow (1908–70) pioneered a movement called humanistic psychology which reached its peak in the 1960s. In 1961, he was elected a Fellow of the American Academy of Arts and Sciences. Carl Rogers was also one of the people who questioned the rise of McCarthyism in the 1950s. Through articles, he criticized society for its backward-looking affinities.