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Education and early career

Ellis entered the field of clinical psychology after first earning a Bachelor of Arts degree in business from what was then known as the City College of New York Downtown in 1934. He began a brief career in business, followed by one as a writer. These endeavors took place during the Great Depression that began in 1929, and Ellis found that business was poor and had no success in publishing his fiction. Finding that he could write non-fiction well, Ellis researched and wrote on human sexuality. His lay counseling in this subject convinced him to seek a new career in clinical psychology.

In 1942, Ellis began his studies for a PhD in clinical psychology at Teachers College, Columbia University, which trained psychologists mostly in psychoanalysis. He completed his Master of Arts in clinical psychology from Teachers College in June 1943, and started a part-time private practice while still working on his PhD degree—possibly because there was no licensing of psychologists in New York at that time. Ellis began publishing articles even before receiving his PhD; in 1946 he wrote a critique of many widely used pencil-and-paper personality tests. He concluded that only the Minnesota Multiphasic Personality Inventory met the standards of a research-based instrument.

In 1947, he was awarded a PhD in Clinical Psychology at Columbia, and at that time Ellis had come to believe that psychoanalysis was the deepest and most effective form of therapy. Like most psychologists of that time, he was interested in the theories of Sigmund Freud. He sought additional training in psychoanalysis and then began to practice classical psychoanalysis. Shortly after receiving his PhD in 1947, Ellis began a Jungian analysis and program of supervision with Richard Hulbeck, a leading analyst at the Karen Horney Institute (whose own analyst had been Hermann Rorschach, the developer of the Rorschach inkblot test). At that time he taught at New York University, Rutgers University, and Pittsburg State University and held a couple of leading staff positions. At this time, Ellis' faith in psychoanalysis was gradually crumbling.