Download Instrumental Conditioning

Instrumental Conditioning
A Little History
• Thorndike
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discrete trial procedure
outcome dependent on behavior
didn’t find imitative learning
first theory of instrumental learning
Thorndikes’ Law of Effect
S-R associations are stamped
in by reward (satisfiers)
Stimulus
Response
Thorndike’s Answer to “What is learned?”
Habit Learning
S
Reinforcement
“stamps in” this
connection
R
Is This All That’s Learned?
S
R
?
?
O
S-O Association
Stage 1
Stage 2
Test
RightPellet
TonePellet
Tone: Left? Right?
LeftSucrose
LightSucrose
Light: Left? Right?
Number of
Presses
Left
Right
Tone
Light
R-O Association
Phase 1
Devaluation
Push LeftPellet
Pellet+LiCl
Number of Pushes
Push RightSucrose Sucrose+LiCl
Test
Right?
Left?
Right Pushes
Left Pushes
Devalued
Pellet
Devalued
Sucrose
Pavlovian (classical) or Instrumental?
• Office Conditioning
Experiment
Consequence
Effect on Behavior Rate
Event
Presented
Positive
Smile
Reinforcement
Positive
Frown
Punishment
Event
Removed
Negative
Stops
Texting
Reinforcement
Leaves
Negative
Shop
Punishment
Instrumental Crying