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Thinking About Psychology: The Science of Mind and Behavior Charles T. Blair-Broeker Randal M. Ernst
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Operant Conditioning Module 16
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What is Operant Conditioning? Module 16: Operant Conditioning
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Operant Conditioning A type of learning in which the frequency of a behavior depends on the consequence that follows that behavior The frequency will increase if the consequence is reinforcing to the subject. The frequency will decrease if the consequence is not reinforcing to the subject.
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The Law of Effect Module 16: Operant Conditioning
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Edward Thorndike (1874-1949) Author of the law of effect Behaviors with favorable consequences will occur more frequently. Behaviors with unfavorable consequences will occur less frequently. Created puzzle boxes for research on cats
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Thorndike’s Puzzle Box
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B.F. Skinner (1904-1990) Developed the fundamental principles and techniques of operant conditioning and devised ways to apply them in the real world Designed the Skinner Box, or operant chamber
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Reinforcement/Punishment Reinforcement - Any consequence that increases the likelihood of the behavior it follows Punishment - Any consequence that decreases the likelihood of the behavior it follows The subject determines if a consequence is reinforcing or punishing
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Reinforcement Module 16: Operant Conditioning
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Positive Reinforcement Anything that increases the likelihood of a behavior by following it with a desirable event or state The subject receives something they want Will strengthen the behavior
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Positive Reinforcement
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Negative Reinforcement Anything that increases the likelihood of a behavior by following it with the removal of an undesirable event or state Something the subject doesn’t like is removed Will strengthen the behavior
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Negative Reinforcement
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Positive/Negative Reinforcement
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Reinforcement: Immediate Versus Delayed Reinforcement Module 16: Operant Conditioning
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Immediate/Delayed Reinforcement Immediate reinforcement is more effective than delayed reinforcement Ability to delay gratification predicts higher achievement
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Reinforcement: Primary Versus Secondary Reinforcement Module 16: Operant Conditioning
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Primary Reinforcement Something that is naturally reinforcing Examples: food, warmth, water, etc. The item is reinforcing in and of itself
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Secondary Reinforcement Something that a person has learned to value or finds rewarding because it is paired with a primary reinforcer Money is a good example
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Punishment: The Process of Punishment Module 16: Operant Conditioning
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Types of Punishment An undesirable event following a behavior A desirable state or event ends following a behavior
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Punishment: Problems With Punishment Module 16: Operant Conditioning
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Negative Effects of Punishment Doesn’t prevent the undesirable behavior when away from the punisher Can lead to fear, anxiety, and lower self- esteem Children who are punished physically may learn to use aggression as a means to solve problems.
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Positive Effects of Punishment Punishment can effectively control certain behaviors. Especially useful if teaching a child not to do a dangerous behavior Most still suggest reinforcing an incompatible behavior rather than using punishment
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Some Reinforcement Procedures: Shaping Module 16: Operant Conditioning
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Shaping Reinforcement of behaviors that are more and more similar to the one you want to occur Technique used to establish a new behavior
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Some Reinforcement Procedures: Discrimination and Extinction Module 16: Operant Conditioning
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Discrimination The ability to distinguish between two similar stimuli Learning to respond to one stimuli but not to a similar stimuli
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Extinction In operant conditioning, the loss of a conditioned behavior when consequences no longer follow it. The subject no longer responds since the reinforcement or punishment has stopped.
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Schedules of Reinforcement: Continuous Reinforcement Module 16: Operant Conditioning
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Continuous reinforcement A schedule of reinforcement in which a reward follows every correct response Most useful way to establish a behavior The behavior will extinguish quickly once the reinforcement stops.
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Schedules of Reinforcement: Partial Reinforcement Module 16: Operant Conditioning
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Partial Reinforcement A schedule of reinforcement in which a reward follows only some correct responses Includes the following types: –Fixed-interval and variable interval –Fixed-ratio and variable-ratio
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Fixed-Interval Schedule A partial reinforcement schedule that rewards only the first correct response after some defined period of time i.e. weekly quiz in a class
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Variable-Interval Schedule A partial reinforcement that rewards the first correct response after an unpredictable amount of time i.e. “pop” quiz in a class
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Fixed-Ratio Schedule A partial reinforcement schedule that rewards a response only after some defined number of correct responses The faster the subject responds, the more reinforcements they will receive.
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Variable-Ratio Schedule A partial reinforcement schedule that rewards an unpredictable number of correct responses This schedule is very resistant to extinction. Sometimes called the “gambler’s schedule”; similar to a slot machine
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Schedules of Reinforcement
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New Understandings of Operant Conditioning: The Role of Cognition Module 16: Operant Conditioning
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Latent Learning Learning that takes place in absence of an apparent reward
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Cognitive Map A mental representation of a place Experiments showed rats could learn a maze without any reinforcements
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Overjustification Effect The effect of promising a reward for doing what someone already likes to do The reward may lessen and replace the person’s original, natural motivation, so that the behavior stops if the reward is eliminated
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New Understandings of Operant Conditioning: The Role of Biology Module 16: Operant Conditioning
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Biological Predisposition Research suggests some species are biologically predisposed to learn specific behaviors
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The End
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