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PSYC2011 lecture 5 - PSYC2011 Brain&Behaviour EvanLivesey...

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3/7/2011 1 PSYC2011 Brain & Behaviour Evan Livesey [email protected] Text: Bouton, M. E. (2007). Learning and behavior: A contemporary synthesis. Sinauer: Sunderland. Lectures 5 9: An introduction to instrumental learning • Lecture 5: Positive reinforcement and extinction • Lecture 6: The role of the discriminative stimulus in behaviour • Lecture 7: The motivating role of the reinforcer in behaviour • Lecture 8: Fear and punishment • Lecture 9: Avoidance learning
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3/7/2011 2 Lecture 5 Positive reinforcement and extinction Bouton p 46 50, 60 63, 233 239 Important concepts in Lecture 5… • Reinforcement • Contingency and contiguity • Shaping • Schedules of reinforcement • Extinction Instrumental conditioning • Also called “operant conditioning” • “Response” learning Stimulus Response Outcome • Distinct from classical (Pavlovian) conditioning Conditioned Stimulus (CS) Unconditioned Stimulus (US) • The subject’s behaviour determines the presentation of outcomes only in instrumental conditioning
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3/7/2011 3 Thorndike’s Law of effect “Of several responses made to the same situation, those which are accompanied or closely followed by satisfaction to the animal will, other things being equal, be more firmly connected with the situation, so that, when it recurs, they
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