CL+Fa10+L12+_+13+_Ch+9_-S

CL+Fa10+L12+_+13+_Ch+9_-S - Conditioning & Learning:...

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Conditioning & Learning: Conditioning & Learning: Lectures 12 & 13 Lectures 12 & 13 Extinction of Conditioned Behavior (Ch 9)
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Outline: Extinction of Outline: Extinction of Conditioned Behavior (Ch 9) Conditioned Behavior (Ch 9) I. Effects of Extinction Procedures II. III. Enhancing Extinction IV. What is Learned in Extinction? V. Resistance to Change & Behavioral Momentum
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I. Effects of Extinction Procedures I. Effects of Extinction Procedures Extinction : omitting the US/reinforcer, resulting in decrease/elimination of CR/IR 2 basic behavioral effects: 1. target response (CR, IR) 2. initial response variability Neuringer et al (2001) 2 groups: VAR (reinforced for behav variability) & YOKE (reinforced) 2 phases: reinforcement & extinction 2 outcomes: variability (top) & response rate Frustration : emotional Based on Fig. 9.1. Neuringer et al (2001) Response variability Response rate
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Spontaneous recovery Renewal of original excitatory conditioning Reinstatement of conditioned excitation Retention of knowledge of reinforcer
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II. Extinction & Original Learning: II. Extinction & Original Learning: Spontaneous Recovery Spontaneous Recovery Spontaneous recovery : increased responding after extinction due to a rest period Fig 9.3. acquisition : 2 CSs signaled food & sucrose (USs); extinction : CSs w/o USs; test : CS1 8-day delay, CS2 no delay Delay resulted in spontaneous recovery Spontaneous recovery not complete Based on Fig. 9.3. Rescorla (2004a)
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II. Extinction & Original Learning: II. Extinction & Original Learning: Renewal : recovery of acquisition performance when contextual extinction cues are removed Fig 9.4. conditioned fear. Training: lever press for food in context A
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This note was uploaded on 11/05/2011 for the course 830 311 taught by Professor Joannehash-converse during the Fall '10 term at Rutgers.

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CL+Fa10+L12+_+13+_Ch+9_-S - Conditioning & Learning:...

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