1. Classical Conditioning Mr. Koch Psychology Forest Lake High School

2. Ivan Pavlov 1849-1936 Russian physician/ neurophysiologist Studied digestive secretion – Accidentally discovered Classical Conditioning

3. Classical Conditioning Unconditioned Stimulus (UCS) – Stimulus which causes an automatic unlearned response The food Unconditioned Response (UCR) – Unlearned behavior of an organism which occurs naturally as a result of stimulation Salivation when food is in mouth

4. Classical Conditioning Acquisition – The initial stage of learning In classical conditioning, the phase associating a neutral stimulus with an unconditioned stimulus

5. Classical Conditioning Conditioned Stimulus (CS) – Being paired with a stimulus that causes a response this will eventually cause a similar response – Starts as a Neutral Stimulus (NS) before pairing Tone of a bell/tuning fork Conditioned Response (CR) – The behavior of an organism when a conditioned stimulus is presented after the CS has been paired with a UCS Salivation

6. Classical Conditioning

7. UCS (passionate kiss) UCR (sexual arousal) CS (onion breath) CS (onion breath) CR (sexual arousal) UCS (passionate Kiss) UCR (sexual arousal)

8. Classical Conditioning UCS (drug) UCR (nausea) CS (waiting room) CS (waiting room) CR (nausea) UCS (drug) UCR (nausea)

9. Classical Conditioning What would happen if UCS stopped being paired with CS? (i.e. rang bell and gave dog no food?) Extinction – The elimination of the conditioned response by presenting the CS without the UCS

10. Classical Conditioning What if you then allowed time to pass before presenting the CS again? Spontaneous Recovery – The recovery of the response to a particular stimulus after extinction and the passage of time

11. Strength of CR Pause Acquisition (CS+UCS) Extinction (CS alone) Extinction (CS alone) Spontaneous recovery of CR

12. Classical Conditioning Generalization – Subject reacts to a class of stimuli similar to the original CS “Little Albert” experiment (Watson and Rosalie Rayner)

13. Classical Conditioning Discrimination – Subject learns to respond to a particular stimulus (ability to distinguish between a CS and other stimuli)

14. Classical Conditioning Taste Aversion John Garcia – Can learn association between taste and nausea even hours after eating Adaptive for survival Challenged idea that pairing must be immediate – Examples: » Problems for chemotherapy patients » Mr. Koch’s dad & chocolate milk » Binge drinkers and tequila » Nausea-inducing drugs & alcohol