Behaviorism is a psychological approach that views learning as conditioned responses to stimuli and environments. Behaviorists in education advocate a system of rewards and targets to shape student behavior. Key theorists include Ivan Pavlov who demonstrated classical conditioning in dogs, Edward Thorndike who established the law of effect that behaviors followed by rewards become stronger, John Watson who believed behavior results from specific stimuli and responses, and B.F. Skinner who developed operant conditioning where behaviors are reinforced through rewards or punishments. Behaviorism focuses on observable behaviors and seeks to modify them through stimuli in the learning environment.