Lect+11+March+04+2010

Lect+11+March+04+2010 - Schedules of Reinforcement and...

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Schedules of Reinforcement and Choice Behavior Ch. 6 March 4, 2010
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Instrumental Conditioning: Motivational Mechanisms Ch. 7 March 4, 2010
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Email: conditioning.learning@live.com TA: Kai Lu Office Hours: Wed 2-5pm Email: kialu@eden.rutgers.edu Rm 332 Psychology Building, Busch
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Midterm 2: Exam Date z Per class consensus (well at least that showed up for class on Tuesday March 2)-here’s the new date for midterm 2: { Thursday, March 25, 2010
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Lecture Outline z Ch 6 { I. Measuring behavior: The Cumulative Recorder { II. Simple Schedules of Intermittent Reinforcement: z A. Ratio Schedules z B. Interval Schedules z C. Comparison of Ratio and Interval Schedules z D. Response - Rate Schedules of Reinforcement { III. Choice Behavior: Concurrent Schedules z A. Measures of Choice Behavior z B. The Matching Law z C. Mechanisms of the The Matching Law
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Lecture Outline z Ch 7 { The Associative Structure of Instrumental Conditioning z The S- R Association and the Law of Effect z Expectancy of Reward and the S- O Association z R- O and S( R- O) Relations in Instrumental Conditioning { Behavioral Regulation z Antecedents of Behavioral Regulation z Behavioral Regulation and the Behavioral Bliss Point z Economic Concepts and Response Allocation z Problems with Behavioral Regulation Approaches z Contributions of Behavioral Regulation
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Mini-review { II. Simple Schedules of Intermittent Reinforcement: z A. Ratio Schedules z B. Interval Schedules z C. Comparison of Ratio and Interval Schedules z D. Response - Rate Schedules of Reinforcement { III. Choice Behavior: Concurrent Schedules z A. Measures of Choice Behavior z B. The Matching Law z C. Mechanisms of the The Matching Law
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Schedules of Reinforcement: Continuous and Intermittent Schedules z Continuous Reinforcement (CRF) – Behavior is reinforced every time it occurs z Example: Rat gets food pellet every time it presses lever or child praised each time hang up coat z Opposite is extinction z Leads to rapid increases in the rate of behavior z Not very common in natural environment z Variable (Intermittent) reinforcement - Behavior that is reinforced on some occasions but not others { 4 common types: fixed ratio, variable ratio, fixed interval, variable interval { 2 main categories { Ratio – Depend on # of responses { Interval – Depend on responses and amount of time passed
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Response Response Reward Reward Response Response Reward Reward Fixed Interval (Fixed interval 2 min. schedule) Fixed Interval (Fixed interval 2 min. schedule) Time Time 2min 2min Continuous Continuous
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Schedules of Reinforcement z Behavior is not necessarily going to be reinforced every time it occurs z In real life, behavior is not often reinforced each time it occurred z A reinforcement schedule is a rule stating which instances of behavior, if any, will be reinforced z Intermittent reinforcement refers to reinforcement that is not administered to each instance of a response
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Advantages of Intermittent Reinforcement z Economizing on time and reinforcers when
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Lect+11+March+04+2010 - Schedules of Reinforcement and...

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