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Canada (162,164)
Psychology (9,697)
PSYA02H3 (962)
John Bassili (149)
Chapter 9

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John Bassili

Chapter 9 ShapingShaping differential reinforcement of successive approximations of a target behaviour until the person exhibits the target behaviourDifferential reinforcement involves basic principle of reinforcement and extinction o Occurs when one particular behaviour is reinforced and all other behaviours are not reinforced in a particular situation Thus behaviour that is reinforced increases and the ones not reinforced decreases through extinctionShaping used for developing language successive approximations or shaping steps includebabbling word sounds part words whole words string of words and sentencesSteps 1 Starting behaviour first approximationreinforce thisbehaviour increases 2 Stop reinforcingextinction burstnovel behaviours appear 3 Reinforce novel behaviour closer approximation to target thus person exhibits novel behaviour more and previous behaviour less o Process of differential reinforcement reinforcement of a closer approximation and extinction of a previous approximation continues until the person finally exhibits target behaviourTiming is important in shapingwant to deliver reinforcer at the exact instant that the correct approximation occursWhy trainers establish clicking sound as reinforcertiming and
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