Document Detail

Learned avoidance of flavors signaling reduction in a nutrient.
MedLine Citation:
PMID:  20141322     Owner:  NLM     Status:  MEDLINE    
Food-deprived rats learned to avoid a flavor negatively correlated with access to a rich nutrient, 20% maltodextrin (20M) solution. This avoidance in two-bottle choice tests was produced by training consisting of either an unpaired condition where sessions of unflavored 20M were intermixed with sessions of 2 or 3% maltodextrin (2M or 3M) flavored with salt (Experiment 1) or almond (Experiments 3 and 4) or a differential conditioning procedure where one flavor was mixed with 20M and another with 2M (Experiment 2). Avoidance was counter-conditioned by mixing the target flavor with 20M (Experiment 1), generalized to a neutral context (Experiment 3), and displayed strong resistance to extinction (Experiment 4). The results demonstrated that food avoidance learning can occur in the absence of an aversive unconditioned stimulus and indicated that unpaired control groups and differential conditioning procedures may be misleading in flavor preference learning research when further control conditions are absent.
Robert A Boakes; Ben Colagiuri; Michelle Mahon
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of experimental psychology. Animal behavior processes     Volume:  36     ISSN:  1939-2184     ISO Abbreviation:  J Exp Psychol Anim Behav Process     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-02-09     Completed Date:  2010-04-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7504289     Medline TA:  J Exp Psychol Anim Behav Process     Country:  United States    
Other Details:
Languages:  eng     Pagination:  117-25     Citation Subset:  IM    
School of Psychology, University of Sydney, NSW 2006, Australia.
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MeSH Terms
Analysis of Variance
Avoidance Learning / physiology*
Choice Behavior / physiology
Conditioning, Classical / physiology
Conditioning, Operant / physiology*
Flavoring Agents / administration & dosage*
Food Deprivation / physiology
Food Preferences / physiology*
Generalization (Psychology)
Inhibition (Psychology)
Lithium Chloride / adverse effects
Polysaccharides / administration & dosage*
Rats, Sprague-Dawley
Rats, Wistar
Time Factors
Reg. No./Substance:
0/Flavoring Agents; 0/Polysaccharides; 7447-41-8/Lithium Chloride; 9050-36-6/maltodextrin

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

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