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Warm-up Write a paragraph describing something you learned to do and how you learned it. Give specifics in your description; stay away from generalizations.

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Presentation on theme: "Warm-up Write a paragraph describing something you learned to do and how you learned it. Give specifics in your description; stay away from generalizations."— Presentation transcript:

1 Warm-up Write a paragraph describing something you learned to do and how you learned it. Give specifics in your description; stay away from generalizations.

2 Classical Conditioning
Definition: A type of learning that occurs when an association is made between a meaningful stimulus & a non-meaningful stimulus Ivan Pavlov (1903 Pavlovian Conditioning) Russian physiologist/digestion in dogs John Watson (1925) Little Albert

3 Classical Conditioning Apparatus

4 Classical Conditioning Diagram

5 Second-Order Conditioning

6 Terminology Unconditioned Stimulus (UCS): Stimulus that evokes an unconditioned response (automatic) Conditioned Stimulus (CS): Previously neutral stimulus that has, through conditioning, acquired the capacity to evoke a conditioned response Unconditioned Response (UCR): Unlearned reaction to an unconditioned stimulus that occurs without previous conditioning Conditioned Response (CR): Learned reaction to a conditioned stimulus that occurs because of previous conditioning

7 Classical Conditioning –another version

8 Procedures in Classical Conditioning
Conditioning or Acquisition Presenting the CS and the UCS together Testing and Extinction Presenting the CS alone

9 Processes in Classical Conditioning
Acquisition: initial stage of learning Extinction: the gradual weakening and disappearance of a conditioned response tendency CS repeatedly presented without UCS Spontaneous Recovery: a reappearance of an extinguished response after a period of nonexposure to the conditioned stimulus Stimulus Generalization: a similar CS makes a CR Classic Study: “Little Albert” Stimulus Discrimination: no CR with a similar CS

10 Acquisition, Extinction & Spont. Recovery Curve

11 Acquisition, Extinction, Spont. Recovery Graph

12 Applications of Classical Conditioning
Fears Addictions Advertising Pairing good looking models with products Music and product Aversion Therapy Taste Aversion Antabuse/Alcoholism MCI, security, raise hand

13 Operant Conditioning Thorndike’s Law of Effect Skinner
Behavior preceding positive reinforcement increases Behavior preceding punishment or no reinforcement decreases Puzzle Box Skinner Skinner Box Shaping: Reinforcing small steps toward more complex behavior Discrimitive Stimulus: signals availability of reinforcement or punishment (light, sound, parent)

14 Thorndike Puzzle Box

15 Skinner Box

16 Terminology and Consequences
Reinforcement: consequences that strengthen responses Positive Reinforcement: A response is strengthened because it is followed by the presentation of a rewarding stimulus Negative Reinforcement: A response is strengthened because it is followed by the removal of an aversive stimulus (buzzer for seat belt) Conditioned Reinforcement Primary Reinforcers: Inherently reinforcing satisfy biological needs (food, water, shelter) Secondary Reinforcers: Acquire reinforcing qualities by being associated with primary reinforcers (money, stickers, praise)

17 Punishment Negative Punishment: Occurs when an averse stimulus follows a response and decreases the tendency to make that response Positive Punishment (omission): Taking away something of value (grounding, no car, no scholarship)

18 Processes in Operant Conditioning
Acquisition: Initial stages of learning through reinforcement Extinction: The gradual weakening and disappearance of a response tendency because the response is no longer followed by a reinforcer Generalization: When responding increases in the presence of new stimuli that resembles the original discriminative stimulus Discrimination: When responding does not increase in the presence of a new stimulus that resembles the original discriminative stimulus

19 Schedules of Reinforcement
Continuous: Reinforce every time (fastest, but quickest to extinction) Partial Schedules Variable Ratio: Reinforcer after a variable number of nonreinforced responses Variable Interval: Reinforcer is given for the first response after a variable time interval has elapsed Fixed Ratio: Reinforcer is given after a fixed number of nonreinforced responses Fixed Interval: Reinforcer is given for the first response that occurs after a fixed time interval has elapsed

20 Schedules of Reinforcement

21 Applications of Operant Conditioning
Day to Day Life Examples Escape/Avoidance Learning Payroll Gambling

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