Lec11 - Animals can develop astounding skills through...

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Psy 1 Today: Learning & conditioning
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Burrhus F. Skinner 1904- Harvard behaviorist
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Let’s see a movie about Skinner (next slide) Worth CD1 Track 9
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Rat in response box Fig. 4.8
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How Skinner invented the Skinner box Maze Seesaw (=teeter totter) Lever in Skinner box
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Schedules of reinforcement Continuous Fixed interval (elicits scalloping responses) Variable interval Fixed ratio Variable ratio Partial reinforcement, especially variable interval & variable ratio) very resistant to extinction
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Stimulus generalization Stimulus discrimination
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Humans respond vigorously to the same reinforcement schedules as rats
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“Shaping” of behavior: Successive approximations to desired response. Used in training animals.
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Skinner’s pigeon bomb guidance system
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Unformatted text preview: Animals can develop astounding skills through shaping The chicken which never lost at tic-tac-toe Difference between classical and operant conditioning? Classical Animal’s response makes no difference to outcome Operant Animal’s response is Instrumental in gaining reward (food: escape from shock) Operant conditioning Fig. p. 119 Aversion training with poisoned sheep carcasses Fig. p. 132 Behavioral therapy treatment of child molester Why is she doing this? Conscious choice to get payoff . . or some “urge” which is created by past reinforcement? Other examples • Psychiatric patients show most florid symptoms at hour of Grand Rounds • Training them to come in to dinner • Students conditioning Skinner Thank you....
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This note was uploaded on 04/10/2010 for the course PSYC 1 taught by Professor Stuartantsis during the Spring '08 term at UCSD.

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Lec11 - Animals can develop astounding skills through...

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