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How is behavior “shaped” through operant conditioning?

How is behavior “shaped” through operant conditioning?. Operant shaping: demonstration, analysis and terminology Chaining operant behavior (again) The cumulative recorder Asymptotic effects of basic schedules of reinforcement: Fixed-ratio (FR) Fixed-interval (FI)

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How is behavior “shaped” through operant conditioning?

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  1. How is behavior “shaped” through operant conditioning? • Operant shaping: demonstration, analysis and terminology • Chaining operant behavior (again) • The cumulative recorder • Asymptotic effects of basic schedules of reinforcement: Fixed-ratio (FR) Fixed-interval (FI) Variable-ratio (VR) Variable-interval (VI)

  2. R S R S presses bar click of feeder food pellet approaches feeder R S R S candy Examples of operant sequences: Rat in Skinner Box: Professor Wall on Stage: ? bell approaches Experimenter

  3. Conditioned Reinforcer Unconditioned Reinforcer SD: RSRf candy “target response” Professor Wall on Stage: bell SD: RSRf approach

  4. Operant level Successive approximations Differential reinforcement Reinforcement variables: Delay of reinforcement Magnitude of reinforcement Frequency of reinforcement Partial Reinforcement Effect (PRE)

  5. (from last week’s lecture) order of chained performance Conditioned Reinforcer Unconditioned Reinforcer order in which links are learned etc. SD: RSRf ? ? tone SD: RSRf bar-press click SD: RSRf food approach

  6. Movement of paper Time pen Spool

  7. No responses Cumulative Responses Low response rate High response rate Reading and interpreting a cumulative record: Time

  8. Transient vs. asymptotic behavior

  9. Sample AsymptoticCumulative Records: etc. reinforcer etc. “scallop” etc. etc. FR10 FI 1min. Cumulative Responses VR10 VI 1min Time

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