Dr. Dichter, who died in 1991 at 84, was considered the founder of motivational psychology.

Alfred Adler, founder of individual psychology, used the word compensation in relation inferiority feelings.

He is regarded as one of the founders of social psychology and the American sociological tradition in general.

He was also a founder of humanistic psychology and instrumental in the encounter group movement of the 1960's.

He was one of the founders of scientific psychology in France.

Weber was a German physician who is credited with being one of the founders of experimental psychology.

He is noted for his work in the study of optimism, health, character, well-being and one of the founders of positive psychology.

He is regarded as one of the founders of social psychology.

William James is considered to be the founder of functional psychology.

He was the founder of empirical psychology and many psychological subjects.