Document Detail

Training delays reduce the choose-short effect with keylight, but not with food, duration samples in pigeons.
MedLine Citation:
PMID:  17079092     Owner:  NLM     Status:  MEDLINE    
Pigeons were trained to match 2- and 8-s food samples. The delay on training trials was either 0s (group 0sF), 5s (group 5sF), or varied between 2 and 8s (M=5s, group 5sV). Testing at a delay that exceeded the training delay by 15s in each group revealed a robust choose-short effect in each group. The same pigeons then reacquired a previously trained matching task involving 2- and 8-s keylight samples. Different comparison stimuli were used on food-sample and keylight-sample trials. The delay on training trials was the same on both food- and keylight-sample trials. Extended-delay testing revealed a robust choose-short effect in all three groups when the durations were conveyed by food presentations, but only group 0sF revealed a choose-short effect when the durations were conveyed by keylight presentations. Hence, training with a nonzero delay, whether fixed or variable, reduces the choose-short effect with keylight durations but not with food durations. It was concluded that at least some of the psychological processes mediating performance differ as a function of the event that conveys the duration.
Douglas S Grant
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-10-31
Journal Detail:
Title:  Behavioural processes     Volume:  74     ISSN:  0376-6357     ISO Abbreviation:  Behav. Processes     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-12     Completed Date:  2007-05-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  209-16     Citation Subset:  IM    
Department of Psychology, University of Alberta, Edmonton, Alberta, Canada T6G 2E9.
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MeSH Terms
Choice Behavior / physiology*
Discrimination Learning / physiology*
Reinforcement (Psychology)*
Set (Psychology)
Time Perception / physiology*

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