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What’s this about LEARNING? What’s this about LEARNING? Learning & Conditioning- Classical Conditioning: Generalization, Extinction, Discrimination & Spontaneous Recovery
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Learning vs Conditioning Stimulus A (The word ball) Thought of B (Mental image of a ball) Thought of B (Mental image of a ball) Learning Experience After Learning Neutral stimulus (Bell) Unconditioned response (Salivation) Conditioned response (Salivation) Conditioning Procedure After Conditioning Unconditioned stimulus (Food) Conditioned stimulus (Bell) Stimulus A (The word ball) Stimulus B (Sight of a ball)
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Classical Conditioning IIvan Pavlov 11849-1936 RRussian physician/ neurophysiologist NNobel Prize in 1904 sstudied digestive secretions
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UUnconditioned Stimulus (UCS) sstimulus that unconditionally--automatically and naturally--triggers a response UUnconditioned Response (UCR) uunlearned, naturally occurring response to the unconditioned stimulus
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CConditioned Stimulus (CS) ooriginally irrelevant stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response CConditioned Response (CR) llearned response to a previously neutral conditioned stimulus
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Classical or Pavlovian Conditioning UNCONDITIONED STIMULUS REFLEX ACTION will elicit a UNCONDITIONED STIMULUS NEUTRAL STIMULUS REFLEX ACTION will elicit a CONDITIONED STIMULUS will elicit a CONDITIONED RESPONSE NEUTRAL STIMULUS will elicit NO REACTION
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Pavlov’s Classic Experiment Before Conditioning During ConditioningAfter Conditioning UCS (food in mouth) Neutral stimulus (tone) No salivation UCR (salivation) Neutral stimulus (tone) UCS (food in mouth) UCR (salivation) CS (tone) CR (salivation)
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Nausea Conditioning in Cancer Patients UCS (drug) UCR (nausea) CS (waiting room) CS (waiting room) CR (nausea) UCS (drug) UCR (nausea)
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Classical Conditioning UCS (passionate kiss) UCR (sexual arousal) CS (onion breath) CS (onion breath) CR (sexual arousal) UCS (passionate Kiss) UCR (sexual arousal) Other examples? Odors? Memory?
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Classical Conditioning AAcquisition tthe initial stage in classical conditioning tthe phase associating a ns with an ucs so that the ns comes to elicit a cr
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EExtinction ddiminishing of a CR iin classical conditioning, when a UCS does not follow a CS
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Strength of CR Pause Acquisition (CS+UCS) Extinction (CS alone) Extinction (CS alone) Spontaneous recovery of CR
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Classical Conditioning SSpontaneous Recovery rreappearance, after a rest period, of an extinguished CR GGeneralization ttendency for stimuli similar to CS to elicit similar responses
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DDiscrimination iin classical conditioning, the learned ability to distinguish between a CS and other stimuli that do not signal a UCS
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Do Demo- Gun…. Stop here….. End of lesson one
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Behaviorism John B. Watson Baby Albert Experiment Conditioned humans & emotional response
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Classical Conditioning
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Show Clip… Watson's Baby Albert
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Operant Conditioning- WWhat is Operant Conditioning? ttype of learning in which behavior is strengthened if followed by reinforcement or diminished if followed by punishment WWhat is the Law of Effect? TThorndike’s principle that behaviors followed by favorable consequences become more likely, and behaviors followed by unfavorable consequences become less likely
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Operant Conditioning BB.F. Skinner (1904-1990) eelaborated Thorndike’s Law of Effect ddeveloped behavioral technology
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SShaping ooperant conditioning procedure in which rein forcers guide behavior toward closer approximations of a desired goal
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Show clip- “Skinner Boxes” Waldon Two- A utopian Community? www.twinoaks.org
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Principles of Reinforcement PPrimary Reinforcer iinnately reinforcing stimulus ii.e., satisfies a biological need CConditioned ( secondary)Reinforcer sstimulus that gains its reinforcing power through its association with primary reinforcer
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How do Punishment & NR differ? PPunishment aaversive event that decreases the behavior that it follows NNR- Precedes behavior and decreases frequency EEX?
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Cognition and Operant Conditioning IIntrinsic Motivation ddesire to perform a behavior for its own sake and to be effective EExtrinsic Motivation ddesire to perform a behavior due to promised rewards or threats of punishments
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Observational Learning OObservational Learning llearning by observing and imitating others ( modeling)
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STOP>>> BANDURA NEXT
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Observational Learning Alfred Bandura’s Experiments Bobo doll we look and we learn Prosocial behavior
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Does TV Make children Violent? It can magnify predisposition to violence in males. Increase aggressive response in non- violent males Almost no impact on females More than two hours per day before age five increases rate of ADD. Critique of Studies?
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Television and Observational Learning
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