Document Detail

Stimulus effects on local preference: stimulus-response contingencies, stimulus-food pairing, and stimulus-food correlation.
MedLine Citation:
PMID:  20676267     Owner:  NLM     Status:  MEDLINE    
Four pigeons were trained in a procedure in which concurrent-schedule food ratios changed unpredictably across seven unsignaled components after 10 food deliveries. Additional green-key stimulus presentations also occurred on the two alternatives, sometimes in the same ratio as the component food ratio, and sometimes in the inverse ratio. In eight experimental conditions, we varied the contingencies surrounding these additional stimuli: In two conditions, stimulus onset and offset were noncontingent; in another two, stimulus onset was noncontingent, and offset was response contingent. In four conditions, both stimulus onset and offset were contingent, and in two of these conditions the stimulus was simultaneously paired with food delivery. Sensitivity to component food ratios was significantly higher when stimulus onset was response contingent compared to when it was noncontingent. Choice changes following food delivery were similar in all eight conditions. Choice changes following stimuli were smaller than those following food, and directionally were completely determined by the food-ratio:stimulus-ratio correlation, not by the stimulus contingency nor by whether the stimulus was paired with food or not. These results support the idea that conditional reinforcers may best be viewed as signals for next-food location rather than as stimuli that have acquired hedonic value, at least when the signals are differential with respect to future conditions.
Michael Davison; William M Baum
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  93     ISSN:  1938-3711     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-08-02     Completed Date:  2010-11-12     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  45-59     Citation Subset:  IM    
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MeSH Terms
Choice Behavior
Food Preferences
Generalization (Psychology)
Knowledge of Results (Psychology)
Reinforcement (Psychology)*
Reinforcement Schedule
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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