1904 - 1990
B.F. Skinner was an American psychologist and behaviorist, known for his development of operant conditioning, a theory that emphasizes the role of reinforcement in shaping behavior. Born on March 20, 1904, he significantly influenced psychology and education through his research on behavior modification and the use of Skinner boxes in experimental analysis. Skinner's work established foundational principles of behavior analysis, making him a key figure in 20th-century psychology.