Document Detail

Strategies of schedule preference in chimpanzees.
MedLine Citation:
PMID:  6080827     Owner:  NLM     Status:  MEDLINE    
Two chimpanzees were required to choose between a fixed-ratio schedule and a progressive-ratio schedule which increased in response requirement by 20 responses each time it was chosen. Each choice of the fixed ratio reset the progressive ratio to its minimum value. The fixed-ratio requirement was varied from 40 to 1000 responses. The subjects' preferences for the progressive-ratio schedule varied as a function of the magnitude of the fixed-ratio requirement. An analysis of the preference data indicated that the animals tended to minimize reinforcement cost rather than match the progressive-ratio requirement to the fixed-ratio requirement. In a second experiment, selection of the fixed ratio did not reset the progressive-ratio requirement to its minimum value. In this case, the animals matched the progressive-ratio requirement to the fixed-ratio requirement. A model based on reinforcement cost is presented which permits accurate prediction of preferences between fixed and progressively increasing ratio schedules.
W Hodos; G H Trumbule
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  10     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  1967 Nov 
Date Detail:
Created Date:  1968-04-06     Completed Date:  1968-04-06     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  503-14     Citation Subset:  IM    
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MeSH Terms
Motor Activity
Reaction Time
Reinforcement (Psychology)*
Reinforcement Schedule

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

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