Great Psychologists

Great psychologists include famous psychoanalysts like Freud and Jung as well as lesser known psychiatrists. Learn how great psychologists have contributed to our knowledge of psychology.

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Hull, Clark Leonard

Hull, Clark Leonard (1884-1952), an American psychologist, expressed psychological theory in mathematical terms.


Lashley, Karl Spencer (1890-1958) was an American psychologist who researched the correlation between brain function and learning.

Lewin, Kurt (1890-1947), a German-born American psychologist, developed the field theory of behavior and helped found modern experimental social psychology.

Maslow, Abraham Harold (1908-1970), an American psychologist, is best known for launching humanistic psychology, which emphasizes the independent value of human beings and their ability to develop to their full potential.

McDougall, William (1871-1938) was a British psychologist who founded the school of purposive psychology, which suggested that humans and animals act for specific purposes, with the actions directed toward achieving certain goals.

Overstreet, Harry and Bonaro, United States authors, husband and wife. Most of their books are discussions of various aspects of contemporary sociology, psychology, or philosophy in a popular vein.

Piaget, Jean (1896-1980), a Swiss psychologist, biologist, and philosopher. Piaget was a pioneer in the field of developmental psychology.

Rogers, Carl R. (Ransom) (1902-1987), a United States psychologist. He developed the “client-centered,” or “nondirective,” approach to counseling persons with emotional problems.

Skinner, B. F. (Burrhus Frederic) (1904-1990), a United States psychologist.

Terman, Lewis M. (Madison) (1877-1956), a United States psychologist. In 1916 Terman published the Stanford-Binet test, an American revision of the children's individual intelligence test developed by the French psychologist Alfred Binet.

Thurstone, Louis Leon (1887-1955) was an American psychologist who was instrumental in the development of psychological tests.