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1909-1994
American existential psychoanalyst who popularized a humanistic, spiritually based psychology.

Rollo May was one of the most influential American psychologists of the twentieth century. He helped to introduce European existential psychoanalysis to an American audience. He was a founder of humanistic psychology, with its focus on the individual, as opposed to the behaviorist psychology and Freudian psychoanalysis that was prevalent in the 1940s and 1950s. May's writings were both practical and spiritual and they promoted the power and worth of the individual. As such, they contributed to the development of the