Niebuhr [Oden's Doctoral adviser at Yale and leading 20th century Christian theological ethicist] wanted all of his graduate students to have some serious interdisciplinary competence beyond theology, so I chose to be responsible for the area of psychology of religion. I hoped to correlate aspects of contemporary psychotherapies with a philosophy of universal history. The psychology that prevailed in my college years was predominately Freudian psychoanalysis, but my clinical beginning point in the late 1950's had turned to Rogerian client-centered therapy. The psychology that prevailed in my Yale years was predominantly the empirical social psychologists like Kurt Lewin and Musafer Sherif. I gradually assimilated those views in order to work on a critique of therapies and assess them all in relation to my major interest in the meaning of history.