Psychodynamics New Synthesis", psychiatrist Mardi J. Horowitz states that his own interest and fascination with psychodynamics began during the 1950s, when he heard Ralph Greenson, a popular local psychoanalyst who spoke to the public on topics such as "People who Hate", speak on the radio at UCLA. In his radio discussion, according to Horowitz, he "vividly described neurotic behavior and unconscious mental processes and linked psychodynamics theory directly to everyday life." In the 1950s, American psychiatrist Eric Berne built on Freud's psychodynamic model, particularly that of the "ego states", to develop a psychology of human interactions called transactional analysis which, according
Eric Berne psychiatric residency at the Psychiatric Clinic of Yale University School of Medicine, where he worked for two years. In 1939, Berne became an American citizen and shortened his name from Eric Lennard Bernstein to Eric Berne. In 1949, he was admitted as a Fellow in the American Psychiatric Association. From 1938-40, Berne was an assistant physician at Ring Sanitarium, Arlington Heights, Massachusetts. From 1940-43 he was employed as a psychiatrist in a sanitarium in Connecticut, and concurrently as a clinical assistant in psychiatry at Mt Sinai Hospital in New York. He also maintained a private practice. In 1943, during World