Document Detail

Response variability in pigeons in a Pavlovian task.
MedLine Citation:
PMID:  20400731     Owner:  NLM     Status:  MEDLINE    
Instrumental response variation is inversely related to reward probability. Gharib, Derby, and Roberts (2001) theorized that individuals behave more variably when their expectation of reward is low. They postulate that this behavioral rule assists the discovery of alternative actions when a target response is unlikely to be reinforced. This suggests that response variability may be unaffected in a situation in which an animal's behavior is inconsequential to outcome delivery. We trained 6 pigeons in a within-subjects Pavlovian autoshaping procedure. On any given trial, the pigeons were presented with one of six colored discs on a touchscreen; each stimulus was associated with a particular probability of food, ranging from 100% to 0.6%. Pecking was more variable with low probabilities of food delivery, thus extending the rule relating variability and expectation to a Pavlovian situation.
W David Stahlman; Michael E Young; Aaron P Blaisdell
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Learning & behavior     Volume:  38     ISSN:  1543-4494     ISO Abbreviation:  Learn Behav     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-19     Completed Date:  2010-06-07     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  101155056     Medline TA:  Learn Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  111-8     Citation Subset:  IM    
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MeSH Terms
Appetitive Behavior*
Association Learning*
Color Perception*
Conditioning, Classical*
Probability Learning*
Grant Support

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