Which psychologist is most associated with the concept of reinforcement?

B.F. Skinner is most associated with the concept of reinforcement due to his pioneering work in behaviorism and operant conditioning. Skinner's research focused on how behaviors can be influenced by rewards and punishments, which he termed reinforcement. He conducted experiments using a device known as the Skinner box, where he demonstrated that behaviors could be strengthened or weakened through reinforcement—positive reinforcement increases behavior by providing a rewarding stimulus, while negative reinforcement increases behavior by removing an aversive stimulus. His work laid the foundation for understanding how behavior is shaped and modified through environmental factors, making reinforcement a central principle in behavioral psychology.