1. Psychology of Learning EXP4404 Chapter 3: Pavlovian (Classical) Conditioning Dr. Steve

2. Topics Covered  Classical Conditioning Paradigm CS, US, CR, UR  Measuring CC  Compound Stimulus Effects  Variables Affecting Conditioning  Theories of Classical Conditioning Stimulus Substitution (Pavlov) Rescorla-Wagner Model

3.  “Psychic Secretions”  Unconditioned Reflexes  Conditioned Reflexes Classical Conditioning

4. Classical Conditioning Paradigm  Classical (Pavlovian or Respondent) Conditioning http://www.youtube.com/watch?v=hhqumfpxuzI

5.  Extinction  Spontaneous Recovery Classical Conditioning Paradigm

6.  CC Examples

7. Classical Conditioning Paradigms Delayed CS US Trace CS US CS US Simultaneous Backward CS US Temporal US CS: Time Interval time

8.  CR vs. UR – How do we know CR is not a reflexive action to CS?  Inhibition of Delay Classical Conditioning Paradigms

9. Measuring Conditioning  Response Latency  Test Trials  CR Intensity  Suppression Ratio

10. Compound Stimulus Effects  Higher-Order Conditioning

11.  Sensory Preconditioning Compound Stimulus Effects

12.  Overshadowing Compound Stimulus Effects

13.  Kamin’s Blocking Effect Compound Stimulus Effects

14. Variables Affecting Conditioning  Previous Exposure to CS & US Latent Inhibition Habituation  Intensity of US  One-Trial Learning  Duration of US  Intensity & Duration of CS

15.  CS-US Interval (1/2 sec usually optimum) Delayed Trace Simultaneous Backward Temporal  Intertrial Interval  Practice Variables Affecting Conditioning

16.  Novelty of CS & US  Similarity of CS to US  Subject Age Variables Affecting Conditioning

17. Classical Conditioning Theories  Stimulus Substitution (Pavlov) Contiguity

18.  Rescorla-Wagner Model  contingency Classical Conditioning Theories

19. Rescorla-Wagner Model : ΔV n = c(λ – V n-1 )  ΔV n = Change in learning since last trial  c = How much of a complete association between CS & US is subject capable of learning on a given trial (0 – 1)  λ = Total amount learnable – estimated by measuring max performance of highly trained subjects (depends on intensity of US)  V n-1 = Amount of learning that previously occurred to the US Trial