1. Experimental Psychology PSY 433 Chapter 9 Conditioning and Learning

2. Midterm Results ScoreGradeN 29-34A7 25-28B11 21-24C4 17-20D0 0-16F2 Top score = 32/34 Top score for curve = 32

3. Willow the Reading Dog http://www.youtube.com/watch?v=S_LhwuN1c1U http://thestarryeye.typepad.com/pets/2009/10/youtube-video-willow-a-dog-that-can-read.html

4. Learning A relatively permanent change in behavior or knowledge as a result of experience Conditioning means learning. Classical (respondent) conditioning -- learn an association between two stimuli Instrumental (operant) conditioning -- learn an association between a behavior and a particular outcome.

5. Pavlov’s Studies

6. Classical Conditioning Prior to conditioning Conditioning After conditioning Neutral stimulus (tone) (Orientation to sound but no response) UCS (food powder in mouth) UCR (salivation) Neutral stimulus CS (tone) UCS (food powder) + CR (salivation) CS (tone) CR (salivation)

7. Classical Conditioning Examples Dog learns to associate food with the sight of a dog food can. Patient learns to associate the sight of the dentist’s office with the pain of dental work (drill). Standing in front of the refrigerator until you feel hungry for something. Hot dogs at the ballpark, popcorn at the movies. Phobias – fear of flying.

8. Operant Conditioning Operant conditioning – consequences of a behavior determine whether it will be repeated in the future. Thorndike’s S-R learning. Also called instrumental conditioning. Skinner box – an animal is rewarded each time it makes a specific response.

9. BehaviorConsequences +  Reinforcement Punishment Increases Reduces Positive reinforcement adds a good thing Negative reinforcement removes bad thing Punishment adds a bad thing Response cost removes good thing

10. Four Kinds of Consequences Positive Stimulus (Add) Negative Stimulus (Subtract) Increase Behavior Decrease Behavior Positive Reinforcement Bonus for working hard leads to more hard work Negative Reinforcement Headache gone after aspirin leads to more aspirin use Positive Punishment Getting speeding ticket leads to less speeding Negative Punishment Missing dinner leads to less staying out late

11. More Terminology Discriminative stimulus – signals the opportunity to perform a behavior and get a reward. Traffic light tells us when to go. “Open” sign tells us when we can buy coffee. Extinction – after learning, reward is withheld and the behavior gradually stops occurring. Null contingency – no relationship between reward or punishment and behavior exists.

12. DVs in Learning Experiments Response rate – number of responses as a function of time. Response amplitude -- amount of saliva. Response latency -- time to accomplish a response. Time to complete a maze Resistance to extinction -- how long it takes a response to go away once it stops being rewarded.

13. IVs in Learning Experiments Magnitude of reinforcement (size of reward). Delay prior to reinforcement. Amount of deprivation (motivation to obtain the reward). Intensity of the CS and UCS in classical conditioning.