Chapter 7 Learning Amber Gilewski Tompkins Cortland Community College Classical conditioning Learning: durable change in behavior or knowledge Ivan Pavlov: digestion in dogs Classical conditioning: type of learning; neutral stimulus brings a response after being paired with another stimulus that naturally brings out that response www.homestead.com/flowstate/files/pavlov.jpg Table of Contents A Schematic Representation of Classical Conditioning Table of Contents Classical Conditioning: terminology Neutral stimulus (NS): (i.e. tone of bell) a stimulus that doesn’t bring about specified response before conditioning Unconditioned Stimulus (UCS): (i.e. meat powder) stimulus that naturally brings about specified response (UCR) Unconditioned Response (UCR): (i.e. salivation) response that is natural; unlearned reaction to UCS Conditioned Stimulus (CS): (i.e. tone of bell after pairing w/meat powder) formerly neutral stimulus that has been paired w/UCS to bring about response (CR) Conditioned Response (CR): (i.e. salivation to tone of bell) learned reaction to a conditioned stimulus Table of Contents Helpful Hints Conditioned=learned; Unconditioned=not learned Unconditioned stimulus => unconditioned response UCS-UCR pairings = unlearned and untrained During conditioning, a NS becomes the CS CS leads to a CR & is a product of learning/training UCR & CR are similar (i.e. salivation) UCR occurs naturally but CR is learned Table of Contents Processes in Classical Conditioning Extinction – response eventually disappears Spontaneous Recovery – response reemerges Stimulus Generalization – respond to similar things Stimulus Discrimination – opposite of generalization Table of Contents Fig 6.10 – The conditioning of Little Albert. The diagram shows how Little Albert’s fear response to a white rat was established. Albert’s fear response to other white, furry objects illustrates generalization. Table of Contents Classical Conditioning in Real Life – conditioning positive emotions Learning to like Learning to fear – conditioning negative emotions Accounting for taste – conditioning likes & dislikes Reacting to medical treatments – reactions to unpleasant treatment or to those that provide relief Table of Contents Operant Conditioning or Instrumental Learning Operant conditioning – learning based on favorable or unfavorable consequences B.F. Skinner (1953) – principle of reinforcement: stimulus increases the probability that a preceding behavior will be repeated if followed by favorable consequences www.nndb.com/people/297/000022231/bf-skinner-sm.jpg Table of Contents Reinforcement: consequences that strengthen responses Delayed Reinforcement -Longer delay, slower conditioning Primary Reinforcers -Satisfy biological needs Secondary Reinforcers -Conditioned reinforcement; associated with primary reinforcers Table of Contents Consequences: Reinforcement and Punishment Increasing a response: – Positive reinforcement = response followed by rewarding stimulus (i.e. raise for good performance) – Negative reinforcement = response followed by removal of an aversive stimulus (i.e. taking aspirin to relieve headache) Decreasing a response: – Punishment: decreases probability that previous behavior will occur again (i.e. penalizing for misbehavior) °Positive punishment – presenting/adding unpleasant stimulus °Negative punishment – reducing/removing a pleasant stimulus – Problems with punishment: negative emotional responses, physical punishment may lead to more aggression Table of Contents Positive Versus Negative Reinforcers Table of Contents Negative Reinforcers Versus Punishment Table of Contents Observational Learning: Basic Processes Albert Bandura: investigated and outlined theory of observational learning (Bobo Doll experiment) Observational learning – learning through modeling others (aka “vicarious conditioning”) 4 key processes – attention – retention – reproduction – motivation Table of Contents