CL+Fa10+L9-S

CL+Fa10+L9-S - Conditioning & Learning: Lecture 9 &...

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Conditioning & Learning: Conditioning & Learning: Complex Choice (Ch 6); IC Motivational Mechanisms (Ch 7)
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Outline: Schedules of Outline: Schedules of Reinforcement & Choice Behavior Reinforcement & Choice Behavior (Ch 6) (Ch 6) I. Simple Schedules of Intermittent Reinforcement II. Choice Behavior: Concurrent Schedules III. Complex Choice
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III. Complex Choice III. Complex Choice Concurrent-Chain schedules : subject can choose on 1 st “link” type of reinforcement schedule to come on 2 nd link, & all other alternatives then become unavailable; choice w/ commitment 2 stages/links Choice link: allowed to choose b/w 2 schedules Terminal link: reinforcement stage; link becomes conditioned reinforcer Fig 6.6 No reinforcer delivered Reinforcer delivered
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III. Complex Choice: III. Complex Choice: Studies of Self Control Studies of Self Control Choosing large delayed reward over smaller immediate one Rachlin & Green (1972): do pigeons have self- control? 2 conditions: Direct-choice: choice between immediate, small reward & delayed large reward; available immediately after pecking Concurrent-chain: choose a schedule, w/ a delay b/w choice Findings: Direct-choice: no self-control Fig 6.7
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III. Complex Choice: Studies of Self Control Studies of Self Control Value-discounting: value of reinforcer   longer have to wait for it Value-discounting fx & impulsivity: steeper delay discounting fx= more difficulty w/ self control V=M/(1+KD) V=value of reinforcer M=reward magnitude K=discounting rate Fig 6.8. Value discounting function. Value
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CL+Fa10+L9-S - Conditioning & Learning: Lecture 9 &...

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