Document Detail

Matching and conditioned reinforcement rate.
MedLine Citation:
PMID:  16673824     Owner:  NLM     Status:  MEDLINE    
Attempts to examine the effects of variations in relative conditioned reinforcement rate on choice have been confounded by changes in rates of primary reinforcement or changes in the value of the conditioned reinforcer. To avoid these problems, this experiment used concurrent observing responses to examine sensitivity of choice to relative conditioned reinforcement rate. In the absence of observing responses, unsignaled periods of food delivery on a variable-interval 90-s schedule alternated with extinction on a center key (i.e., a mixed schedule was in effect). Two concurrently available observing responses produced 15-s access to a stimulus differentially associated with the schedule of food delivery (S+). The relative rate of S+ deliveries arranged by independent variable-interval schedules for the two observing responses varied across conditions. The relation between the ratio of observing responses and the ratio of S+ deliveries was well described by the generalized matching law, despite the absence of changes in the rate of food delivery. In addition, the value of the S+ deliveries likely remained constant across conditions because the ratio of S+ to mixed schedule food deliveries remained constant. Assuming that S+ deliveries serve as conditioned reinforcers, these findings are consistent with the functional similarity between primary and conditioned reinforcers suggested by general choice theories based on the concatenated matching law (e.g., contextual choice and hyperbolic value-added models). These findings are inconsistent with delay reduction theory, which has no terms for the effects of rate of conditioned reinforcement in the absence of changes in rate of primary reinforcement.
Timothy A Shahan; Christopher A Podlesnik; Corina Jimenez-Gomez
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  85     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-05-05     Completed Date:  2006-09-08     Revised Date:  2010-09-16    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  167-80     Citation Subset:  IM    
Utah State University, Department of Psychology, 2810 Old Main Hill, Logan, Utah 84322, USA.
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MeSH Terms
Behavior, Animal / physiology
Choice Behavior*
Conditioning (Psychology)*
Feeding Behavior
Reinforcement (Psychology)*
Grant Support

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