09-Rescorla1

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Handout 9
Higher Order Conditioning
Repeated pairings of conditioned stimuli with neutral stimuli can create new conditioned
stimuli even though the newer conditioned stimuli have never been paired with any
unconditioned stimuli.
Response
T1
,
,
First-Order Conditioning
T2
UCR
(UCS)
Second-Order Conditioning
CR
T3
Third-Order Conditioning
T4
T5
Note: UCS = electric shock
CR
Handout 9
Speed of Conditioning Varies Depending on Stimulus Similarity
Some combinations of stimuli are easier to associate than others
 CS and UCS that naturally go together (for survival): learned taste aversion
 Similar higher order stimuli (e.g., partial information about an object often serves
as a signal of the entire object), like an extension of generalization.
Response
T1
,
,
Group A
T2
UCR
T3
no generalization
T4
T5
CR
(1 time)
Group B
quicker
Response
T2
UCR
T3
CR
T4
(1 time)
slower
Handout 9
Rescorla (1988)
1 = first order conditioning, 2 = second order conditioning
Figure 3
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