1 Operant Conditioning Unit 5. 2 B.F. Skinner and Operant Conditioning Classical conditioning involves an automatic response to a stimulus (conditioned.

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Presentation transcript:

1 Operant Conditioning Unit 5

2 B.F. Skinner and Operant Conditioning Classical conditioning involves an automatic response to a stimulus (conditioned stimulus + unconditioned stimulus) Operant conditioning involves learning how to control one’s response (behavior) to get a reward or avoid a punishment

3 The “Skinner Box”: Skinner’s Hypothesis, Methodology, and Results Rats placed in “Skinner boxes” Shaped to get closer and closer to the bar in order to receive food Eventually required to press the bar to receive food Food is a reinforcer

4 Big Bang Theory Penny and Operant Conditioning.

5 Demo Classroom = B.F. Skinner box

6 Basic Types of Reinforcement Reinforcer: any event that increases or strengthens a behavior it follows. Primary Reinforcer: innately satisfying (not learned, i.e. food) Secondary (conditioned) Reinforcer: power through association with primary reinforcers (learned, i.e. good grades) Positive Reinforcement: strengthens a response by presenting a stimulus after a response (Praise, money) Pass Out Handout!

7 Negative Reinforcement and Punishment Negative reinforcement: Removing an unpleasant stimulus Punishment 1. Unpleasant stimulus 2. Removal of unpleasant stimulus = = 1. Introducing an unpleasant stimulus 2. Withholding a pleasant stimulus

8 Law of Effect-Thorndike Reinforced behaviors are strengthened Punished behaviors are decreased

9 Rates and Types of Reinforcement: Additional Experiments Fixed-ratio: after a fixed number of responses reinforcement is given. (sales) Produces high response rate Variable-ratio: after an unpredictable number of responses reinforcement is given (gambling) Produces high response rate Fixed-interval: after a fixed amount of time reinforcement is given. (mail) Variable-interval: after an unpredictable amount of time reinforcement is given ( ) Predictability Matters

10 Skinner’s Importance Education: programmed instruction Work ParentingPersonal goals

11 Observational Learning Rodney Adkins Watching YouWatching You Watch video What does this song suggest people learn? What principles of learning can you identify from this song?

12 Bandura Research Summarize Bandura’s bobo doll experiment What is the impact of prosocial modeling and of antisocialing modeling? –What are your thoughts on the impact of prosocial and antisocial modeling?

13 Observational Learning Learning w/o direct experience. Observe + imitate = modeling (Bandura) Mirror Neurons: enable empathy and the ability to infer another person’s mental state. We are most of who we are because of imitation.

14 Albert Bandura: Hypothesis Believed we learn through observation and imitation Hypothesized that children would imitate aggressive behavior they observed =

15 Bandura’s Methodology Children watched films of adults beating Bobo dolls Three groups: aggression-rewarded, aggression-punished, no consequences Children went into rooms with toys that they were told not to play with

16 Bandura’s Results Children in the aggression-punished group expressed the fewest aggressive behaviors toward the Bobo dolls Children in the other two groups expressed an equal number of aggressive behaviors and were more aggressive than children in the aggression-punished group EFFECT OF OBSERVED CONSEQUENCE ON IMITATIVE BEHAVIOR

17 Bandura’s Experiment, continued Children promised rewards for imitating the adult in the film Now, all three groups were equally aggressive Children had learned the aggressive behavior from the film, but those who saw the adults being punished were less likely to act aggressively Viewing aggressive behavior Rewards for imitationAggressive behavior + =

18 Bandura’s Social Learning Theory Relates to effects of violence and other images on TV and in the movies Children imitate good and neutral behaviors as well as bad ones