Behaviorism is a worldview that believes all human behavior can be explained through stimulus-response associations without consideration of internal mental states. Key behaviorist theorists include Ivan Pavlov, who studied classical conditioning in dogs, B.F. Skinner, who developed the theory of operant conditioning through experiments with animals and reinforcement, and Albert Bandura, who found that behavior can be learned through observation and not just direct rewards and punishments. Behaviorism had implications for education, suggesting student behavior and learning could be shaped through positive and negative reinforcement in the classroom.