The document discusses several influential theorists in behaviorism: Ivan Pavlov is known for his experiments conditioning dogs to salivate to a bell using classical conditioning. B.F. Skinner conducted experiments using operant conditioning to reward behaviors in pigeons. Albert Bandura focused on social learning theory and the concept of self-efficacy. Edward Thorndike's work led to the development of operant conditioning. The document advocates using positive and negative reinforcement in teaching, as these methods motivate students.