Document Detail

The dynamics of conditioning and extinction.
MedLine Citation:
PMID:  19839699     Owner:  NLM     Status:  MEDLINE    
Pigeons responded to intermittently reinforced classical conditioning trials with erratic bouts of responding to the conditioned stimulus. Responding depended on whether the prior trial contained a peck, food, or both. A linear persistence-learning model moved pigeons into and out of a response state, and a Weibull distribution for number of within-trial responses governed in-state pecking. Variations of trial and intertrial durations caused correlated changes in rate and probability of responding and in model parameters. A novel prediction--in the protracted absence of food, response rates can plateau above zero--was validated. The model predicted smooth acquisition functions when instantiated with the probability of food but a more accurate jagged learning curve when instantiated with trial-to-trial records of reinforcement. The Skinnerian parameter was dominant only when food could be accelerated or delayed by pecking. These experiments provide a framework for trial-by-trial accounts of conditioning and extinction that increases the information available from the data, permitting such accounts to comment more definitively on complex contemporary models of momentum and conditioning.
Peter R Killeen; Federico Sanabria; Igor Dolgov
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Animal behavior processes     Volume:  35     ISSN:  1939-2184     ISO Abbreviation:  J Exp Psychol Anim Behav Process     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-10-20     Completed Date:  2010-01-05     Revised Date:  2013-05-31    
Medline Journal Info:
Nlm Unique ID:  7504289     Medline TA:  J Exp Psychol Anim Behav Process     Country:  United States    
Other Details:
Languages:  eng     Pagination:  447-72     Citation Subset:  IM    
Copyright Information:
PsycINFO Database Record (c) 2009 APA, all rights reserved.
Department of Psychology, Arizona State University, Tempe, AZ 85287-1104, USA.
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MeSH Terms
Behavior, Animal / physiology
Columbidae / physiology
Conditioning, Classical / physiology*
Conditioning, Operant / physiology*
Extinction, Psychological / physiology*
Feeding Behavior
Models, Psychological*
Nonlinear Dynamics*
Reaction Time
Reinforcement (Psychology)
Reinforcement Schedule
Grant Support
R01 MH066860-01A1/MH/NIMH NIH HHS; R01 MH066860-02/MH/NIMH NIH HHS; R01MH066860/MH/NIMH NIH HHS

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

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