The behaviorism learning theory states that learning can occur without conscious thought and is influenced by conditioning principles. Key theorists discussed are Ivan Pavlov, B.F. Skinner, and Albert Bandura. Pavlov's classical conditioning experiments showed that behaviors could be linked to stimuli through association. Skinner's operant conditioning demonstrated how behaviors are shaped by reinforcement. Bandura's research on observational learning and self-efficacy found that people can learn through observing others. In the classroom, behaviorism is applied through reinforcing positive behaviors and consequences for negative ones. While behaviorism is valid, the document asserts that cognitivism and constructivism also contribute to understanding learning.