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Classical Conditioning

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Little Albert was not afraid of rats and rabbits until John Watson and Rosalie ... Facilitation. CSa CSb = US, CSa = no US. Blocking. CSa = US : CSa CSb = US ... – PowerPoint PPT presentation

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Title: Classical Conditioning


1
Classical Conditioning
  • A procedure in which learning occurs with respect
    to one event as the result of the presentation of
    two events in a defined temporal relationship.
    This procedure was first used by Ivan Pavlov.

2
Classical ConditioningExamples
  • Salivary conditioning
  • Invented by Pavlov
  • Eyeblink conditioning
  • Emotional conditioning
  • CER
  • Autoshaping
  • Flavor aversion conditioning
  • Garcia effect
  • Sexual conditioning

3
Classical ConditioningTerminology
  • Unconditioned Stimulus
  • (US or UCS)
  • Conditioned Stimulus (CS)
  • Unconditioned Response
  • (UR or UCR)
  • Conditioned Response (CR)
  • Acquisition
  • Reinforced CS
  • Extinction
  • Nonreinforced CS

4
An ExampleLittle Albert
  • Little Albert was not afraid of rats and rabbits
    until John Watson and Rosalie Raynor gave him
    paired presentations of a rat and a sudden loud
    sound that scared him.
  • US Loud Noise
  • CS Sight of White Rat
  • UR Distress, Fear
  • CR Distress, Fear

5
Temporal Relations
  • Delay Conditioning
  • Trace Conditioning
  • Simultaneous Conditioning
  • Backward Conditioning

CS
US
CS
US
CS
US
CS
US
6
Conditioning Procedures, I
  • Excitatory First-Order Conditioning
  • CSa gt US
  • Inhibitory Conditioning
  • CSa gt US , CSa CSb gt No US
  • Sensory Preconditioning
  • CSa gt CSb , CSb gt US Test CSa
  • Excitatory Second-Order Conditioning
  • CSb gt US , CSa gt CSb Test CSa

7
Conditioning Procedures, II
  • Simple Discrimination
  • CSa gt US , CSb gt no US
  • Facilitation
  • CSa CSb gt US, CSa gt no US
  • Blocking
  • CSa gt US CSa CSb gt US
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