1. Myers’ PSYCHOLOGY (7th Ed) Chapter 8 Learning James A. McCubbin, PhD Clemson University Worth Publishers

2. Learning  Learning  relatively permanent change in an organism’s behavior due to experience

3. Association  We learn by association  Our minds naturally connect events that occur in sequence  Aristotle 2000 years ago  John Locke and David Hume 200 years ago  Associative Learning  learning that two events occur together  two stimuli  a response and its consequences

4. Association  Learning to associate two events Event 1Event 2 Sea snail associates splash with a tail shock Seal learns to expect a snack for its showy antics

5. Classical or Pavlovian Conditioning  We learn to associate two stimuli

6. Operant Conditioning  We learn to associate a response and its consequence

7. Classical Conditioning  Ivan Pavlov  1849-1936  Russian physician/ neurophysiologist  Nobel Prize in 1904  studied digestive secretions

8. Pavlov’s Classic Experiment Before Conditioning During ConditioningAfter Conditioning UCS (food in mouth) Neutral stimulus (tone) No salivation UCR (salivation) Neutral stimulus (tone) UCS (food in mouth) UCR (salivation) CS (tone) CR (salivation)

9. Classical Conditioning  Pavlov’s device for recording salivation

10. Classical Conditioning  Classical Conditioning  organism comes to associate two stimuli  a neutral stimulus that signals an unconditioned stimulus begins to produce a response that anticipates and prepares for the unconditioned stimulus

11. Behaviorism  John B. Watson  viewed psychology as objective science  generally agreed-upon consensus today  recommended study of behavior without reference to unobservable mental processes  not universally accepted by all schools of thought today

12. Classical Conditioning  Unconditioned Stimulus (UCS)  stimulus that unconditionally--automatically and naturally--triggers a response  Unconditioned Response (UCR)  unlearned, naturally occurring response to the unconditioned stimulus  salivation when food is in the mouth

13. Classical Conditioning  Conditioned Stimulus (CS)  originally irrelevant stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response  Conditioned Response (CR)  learned response to a previously neutral conditioned stimulus

14. Classical Conditioning  Acquisition  the initial stage in classical conditioning  the phase associating a neutral stimulus with an unconditioned stimulus so that the neutral stimulus comes to elicit a conditioned response  in operant conditioning, the strengthening of a reinforced response

15. Classical Conditioning UCS (passionate kiss) UCR (sexual arousal) CS (onion breath) CS (onion breath) CR (sexual arousal) UCS (passionate Kiss) UCR (sexual arousal)

16. Classical Conditioning  Extinction  diminishing of a CR  in classical conditioning, when a UCS does not follow a CS  in operant conditioning, when a response is no longer reinforced

17. Classical Conditioning Strength of CR Pause Acquisition (CS+UCS) Extinction (CS alone) Extinction (CS alone) Spontaneous recovery of CR

18. Classical Conditioning  Spontaneous Recovery  reappearance, after a rest period, of an extinguished CR  Generalization  tendency for stimuli similar to CS to elicit similar responses

19. Classical Conditioning  Discrimination  in classical conditioning, the learned ability to distinguish between a CS and other stimuli that do not signal a UCS

20. Generalization Drops of saliva in 30 seconds 60 50 40 30 20 10 0 Hind paw PelvisShoulderFront paw ThighTrunkForeleg Part of body stimulated

21. Nausea Conditioning in Cancer Patients UCS (drug) UCR (nausea) CS (waiting room) CS (waiting room) CR (nausea) UCS (drug) UCR (nausea)

22. Today in Class – Feb. 12 zYou need a book – Page 330 zNotes – Operant Conditioning zPractice – Operant Conditioning zReview – Practice Quiz zExtra time? Study for Quiz - Vocabulary

23. Operant Conditioning  Operant Conditioning  type of learning in which behavior is strengthened if followed by reinforcement or diminished if followed by punishment  Law of Effect  Thorndike’s principle that behaviors followed by favorable consequences become more likely, and behaviors followed by unfavorable consequences become less likely

24. Operant Conditioning  Operant Behavior  operates (acts) on environment  produces consequences  Respondent Behavior  occurs as an automatic response to stimulus  behavior learned through classical conditioning

25. Operant Conditioning  B.F. Skinner (1904-1990)  elaborated Thorndike’s Law of Effect  developed behavioral technology

26. Operant Chamber  Skinner Box  chamber with a bar or key that an animal manipulates to obtain a food or water reinforcer  contains devices to record responses

27. Operant Conditioning  Reinforcer  any event that strengthens the behavior it follows  Shaping  operant conditioning procedure in which reinforcers guide behavior toward closer approximations of a desired goal

28. Operant Conditioning

29. Principles of Reinforcement  Primary Reinforcer  innately reinforcing stimulus  i.e., satisfies a biological need  Conditioned Reinforcer  stimulus that gains its reinforcing power through its association with primary reinforcer  secondary reinforcer

30. Schedules of Reinforcement  Continuous Reinforcement  reinforcing the desired response each time it occurs  Partial (Intermitent) Reinforcement  reinforcing a response only part of the time  results in slower acquisition  greater resistance to extinction

31. Schedules of Reinforcement  Fixed Ratio (FR)  reinforces a response only after a specified number of responses  faster you respond the more rewards you get  different ratios  very high rate of responding  like piecework pay

32. Schedules of Reinforcement  Variable Ratio (VR)  reinforces a response after an unpredictable number of responses  average ratios  like gambling, fishing  very hard to extinguish because of unpredictability

33. Schedules of Reinforcement  Fixed Interval (FI)  reinforces a response only after a specified time has elapsed  response occurs more frequently as the anticipated time for reward draws near

34. Schedules of Reinforcement  Variable Interval (VI)  reinforces a response at unpredictable time intervals  produces slow steady responding  like pop quiz

35. Schedules of Reinforcement Variable Interval Number of responses 1000 750 500 250 0 10203040506070 Time (minutes) Fixed Ratio Variable Ratio Fixed Interval Steady responding Rapid responding near time for reinforcement 80

36. Schedules of Reinforcement zFixed-ratio (FR) schedules give a reward after a fixed number of responses zVariable-ratio (VR) schedules give a reward after an average number of responses. zFixed-interval (FI) schedules reward the first response displayed after a fixed time interval. zVariable-interval (VI) schedules reward the first response displayed after a varying time interval.

37. EXAMPLE zFR – Phil, a real estate broker, receives a bonus for every ten houses he sells. zThe word FIXED in a schedule always means “SET”; the word RATIO always means “BEHAVIOR.” zFR = REWARD AFTER SET NUMBER OF BEHAVIORS.

38. EXAMPLE zVR schedules – call for reinforcement after a variable number of responses. zJocelyn’s parents will reward her with a gift of her choice when she gets one to three good report cards. *** The word VARIABLE means “changing” the word RATIO MEANS “BEHAVIOR.” A reward is presented after a varying number of behaviors (responses).

39. EXAMPLE zFI schedules – call for reinforcement for the first response that occurs after some fixed time has passed since the last reward. zEx. – Levar, a graduate teaching assistant, gets paid once a month. **The word FIXED in a schedule means “set”; the word INTERVAL in a schedule means “time period.” An organism is rewarded for the first behavior after a set time period.

40. EXAMPLE zVI schedules – reinforce the first response after some period of time, but the amount of time varies. zEX. Students who study a little every day in order to be prepared for surprise quizzes given at various times throughout the semester are on a variable-interval schedule. *** The word VARIABLE in a schedule means “changing.” The word INTERVAL means “time period.” An organism is rewarded at changing periods of time.

41. Punishment  Punishment  aversive event that decreases the behavior that it follows  powerful controller of unwanted behavior

42. Story Directions zUse 10 of your vocab words to create your own story similar to the one you read in class. zInclude questions and a word bank just like the story you read in class.

43. Punishment

44. Cognition and Operant Conditioning  Cognitive Map  mental representation of the layout of one’s environment  Example: after exploring a maze, rats act as if they have learned a cognitive map of it  Latent Learning  learning that occurs, but is not apparent until there is an incentive to demonstrate it

45. Latent Learning

46. Cognition and Operant Conditioning  Overjustification Effect  the effect of promising a reward for doing what one already likes to do  the person may now see the reward, rather than intrinsic interest, as the motivation for performing the task

47. Cognition and Operant Conditioning  Intrinsic Motivation  Desire to perform a behavior for its own sake and to be effective  Extrinsic Motivation  Desire to perform a behavior due to promised rewards or threats of punishments

48. Operant vs Classical Conditioning

49. Observational Learning  Observational Learning  learning by observing others  Modeling  process of observing and imitating a specific behavior  Prosocial Behavior  positive, constructive, helpful behavior  opposite of antisocial behavior

50. Observational Learning  Mirror Neurons  frontal lobe neurons that fire when performing certain actions or when observing another doing so  may enable imitation, language learning, and empathy