Document Detail

Reinforcer efficacy in a delayed matching-to-sample task.
MedLine Citation:
PMID:  9465414     Owner:  NLM     Status:  MEDLINE    
Five domestic hens were exposed to a delayed matching-to-sample task. Conditions 1, 5, and 8 were variable-delay conditions in which five delays (0.25, 1, 2, 4, and 8 s) from the red or green sample to the presentation of the red and green comparison stimuli were presented a number of times during each session. In the fixed-delay condition (Condition 3), each delay was presented for 15 sessions under a Latin square design across birds. When improvements in accuracy across the variable-delay conditions are taken into account, the data were similar under both the variable and fixed delays. In Conditions 2, 4, 6, and 7 sample-reinforcer intervals were held at 8, 8, 4, and 2 s, respectively, while sample-choice intervals were varied within these during each session. With increasing sample-reinforcer interval, both initial discriminability (i.e., with sample-choice delay = 0) and rate of decrement in discriminability decreased. Although the former would be predicted if accuracy depends of the average sample-reinforcer interval, the latter would not. These data show that increasing the sample-choice interval had less effect on matching accuracy than increasing the sample-reinforcer interval did.
R Weavers; T M Foster; W Temple
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  69     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-05-04     Completed Date:  1998-05-04     Revised Date:  2010-09-10    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  77-85     Citation Subset:  IM    
Department of Psychology, University of Waikato, Hamilton, New Zealand.
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MeSH Terms
Behavior, Animal / physiology
Chickens / physiology
Choice Behavior / physiology*
Memory / physiology
Reinforcement (Psychology)*
Time Factors

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

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