1. Long lasting change in behavior due to experience.
Learning
Long lasting change in behavior due to experience.

2. Classical Conditioning
Ivan Pavlov
Studied Digestion of Dogs.
Dogs would salivate before they were given food (triggered by sounds, lights etc…)
Dogs must have LEARNED to salivate.
Click above to see about Pavlov

3. Classical Conditioning
This is passive learning (automatic…learner does NOT have to think).
First thing you need is a unconditional relationship.
Unconditional Stimulus (UCS)- something that elicits a natural, reflexive response.
Unconditional Response (UCR)- response to the UCS.

4. Classical Conditioning
Next you find a neutral stimulus (something that by itself elicits no response).
You present the stimulus with the UCS a whole bunch of times.

5. Classical Conditioning
After a while, the body begins to link together the neutral stimulus with the UCS.
Acquisition

6. Classical Conditioning
We know learning takes places when the previously neutral stimulus elicits a response.
At this point the neutral stimulus is called the conditioned stimulus (CS) and the unconditional response becomes the conditioned response (CR).

7. Classical Conditioning
TRICKY FACT: We know learning exists because the CS is linked to the UCS.
This is called ACQUISITION.
Acquisition does not last forever.
The moment the CS is no longer associated with the UCS, we have EXTINCTION.

8. Popular Classical Conditioning Examples
See if you can identify the UCS, UCR, CS and CR.
Classical Conditioning as portrayed in The Office.
A modified version of Clockwork Orange scene. Warning…it is still graphic!!!

9. Timing Matters
Delayed Conditioning: present CS, while CS is still there, present UCS.
Trace Conditioning: present CS, short break, then present UCS.
Simultaneous Conditioning: CS and UCS are presented at the same time.
Backward Conditioning: UCS is presented, then CS is presented.

10. Spontaneous Recovery
Sometimes, after extinction, the CR still randomly appears after the CS is presented.

11. Generalization and Discrimination
Something is so similar to the CS that you get a CR.
Something so different to the CS so you do not get a CR.

12. Classical Conditioning and Humans
John Watson brought Classical Conditioning to psychology with his Baby Albert experiment.
Click to see Baby Albert to some nice jazz.
This type of Classical Conditioning is also known as Aversive Conditioning.

13. Learned Taste Aversions
When it comes to food being paired with sickness, the conditioning is incredible strong.
Even when food and sickness are hours apart.
Food must be salient (noticeable.)

14. Garcia and Koelling Study
Studied rats and how they make associations.
Some associations seem to be adaptive. CS
UCS
Learned Response
Loud Noise
Shock
Fear
Radiation (nausea)
Nothing
Sweet Water
Avoid Water

15. The Learner is NOT passive. Learning based on consequence!!!
Operant Conditioning
The Learner is NOT passive.
Learning based on consequence!!!

16. The Law of Effect Edward Thorndike Locked cats in a cage
Behavior changes because of its consequences.
Rewards strengthen behavior.
If consequences are unpleasant, the Stimulus-Reward connection will weaken.
Called the whole process instrumental learning.
Click picture to see a better explanation of the Law of Effect.

17. B.F. Skinner The Mac Daddy of Operant Conditioning.
Nurture guy through and through.
Used a Skinner Box (Operant Conditioning Chamber) to prove his concepts.

18. Skinner Box

19. Reinforces A reinforcer is anything the INCREASES a behavior.
Positive Reinforcement:
The addition of something pleasant.
Negative Reinforcement:
The removal of something unpleasant.
Two types of NR
Escape Learning
Avoidance Learning
(Getting kicked out of class versus cutting class)

20. Punishment Meant to decrease a behavior. Positive Punishment
Addition of something unpleasant.
Negative Punishment (Omission Training)
Removal of something pleasant.
Punishment works best when it is immediately done after behavior and if it is harsh!

21. How do we actually use Operant Conditioning?
To train a dog to get your slippers, you would have to reinforce him in small steps. First, to find the slippers. Then to put them in his mouth. Then to bring them to you and so on…this is shaping behavior.
Do we wait for the subject to deliver the desired behavior?
Sometimes, we use a process called shaping.
Shaping is reinforcing small steps on the way to the desired behavior.
To get Barry to become a better student, you need to do more than give him a massage when he gets good grades. You have to give him massages when he studies for ten minutes, or for when he completes his homework. Small steps to get to the desired behavior.

22. Chaining Behaviors
Subjects are taught a number of responses successively in order to get a reward.
Click picture to see a rat chaining behaviors.
Click to see a cool example of chaining behaviors.

23. Primary v. Secondary Reinforcers
Primary Reinforcer
Secondary Reinforcer
Things that are in themselves rewarding.
Things we have learned to value.
Money is a special secondary reinforcer called a generalized reinforcer (because it can be traded for just about anything)

24. Token Economy
Every time a desired behavior is performed, a token is given.
They can trade tokens in for a variety of prizes (reinforcers)
Used in homes, prisons, mental institutions and schools.

25. Premack Principle
You have to take into consideration the reinforcers used.
Is the reinforcer wanted….or at least is it more preferable than the targeted behavior.
Pat’s Hubbas might be a great positive reinforcer for me, but it would not work well on a vegetarian.

26. Reinforcement Schedules
How often to you give the reinforcer?
Every time or just sometimes you see the behavior.

27. Continuous v. Partial Reinforcement
Reinforce the behavior EVERYTIME the behavior is exhibited.
Usually done when the subject is first learning to make the association.
Acquisition comes really fast.
But so does extinction.
Reinforce the behavior only SOME of the times it is exhibited.
Acquisition comes more slowly.
But is more resistant to extinction.
FOUR types of Partial Reinforcement schedules.

28. Ratio Schedules Fixed Ratio Variable Ratio
Provides a reinforcement after a SET number of responses.
Provides a reinforcement after a RANDOM number of responses.
Very hard to get acquisition but also very resistant to extinction.
Fixed Ration- She gets a manicure for every 5 pounds she loses.

29. Interval Schedules Fixed Interval Variable Interval
Requires a SET amount of time to elapse before giving the reinforcement.
Requires a RANDOM amount of time to elapse before giving the reinforcement.
Very hard to get acquisition but also very resistant to extinction.
Fixed Interval: She gets a manicure for every 7 days she stays on her diet.

30. Observational Learning
Albert Bandura and his BoBo Doll
We learn through modeling behavior from others.
Observational learning + Operant Conditioning = Social Learning Theory
Click pic to see some observational learning.

31. Insight Learning Wolfgang Kohler and his Chimpanzees.
Some animals learn through the “ah ha” experience.
Click pic to see insight learning.