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Unformatted text preview: ciated with the specific characteristics of the US (e.g.
(2) Affective – Characteristics that the US has in common with other stimuli
and reflect its motivational properties
Blocking is unaffected by a change in the US from water to food between
stages 1 to 2. Shows the CS must have become associated with the
general affective properties of the US in stage 1 Associations between CS. Both these properties can form during excitatory cond. 9 Nature of the conditioned response
The US can influence the CR
A. Consummatory CR
- Evoked when a CS retrieves specific properties of the US - Mimics the response of the US
Example: key pecks of pigeons differ depending on whether the CS
signals food or water B. Preparatory CR
- Evoked when a CS retrieves affective properties of the US. - Appetitive CR might be an increase in activity … or approach
- Aversive CR might a reduction in activity… or withdrawal C. Compensatory CR
- A CR that opposes, or compensates for the UR - Frequently examined in studies of drug to...
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This note was uploaded on 03/24/2012 for the course PSYC 103 taught by Professor Pearlberg during the Spring '07 term at UCSD.
- Spring '07