1. Learning is defined as a relatively permanent change in behavior resulting from experience. It does not include temporary changes or those due to maturation. Learning can occur through direct or vicarious experience.
2. Early theories of learning included rationalism by Plato, who believed knowledge was innate, and empiricism by Aristotle, who focused on sensory experience. Aristotle also proposed laws of association including similarity, contrast, and contiguity.
3. Modern learning theories include Thorndike's connectionism and stimulus-response theory, Pavlov's classical conditioning involving neutral, unconditioned, and conditioned stimuli and responses, and Skinner's operant conditioning using reinforcement and punishment to shape behavior.