Document Detail

Superordinate category formation in pigeons: association with a common delay or probability of food reinforcement makes perceptually dissimilar stimuli functionally equivalent.
MedLine Citation:
PMID:  10531658     Owner:  NLM     Status:  MEDLINE    
Training associated pairs of perceptually dissimilar stimulus classes with a common delay or probability of food reinforcement in pigeons. Then, different choice responses were trained to 1 component class in each pair. In a choice test, the untrained class in each pair occasioned the same response as did the choice-trained class. In a 3rd experiment, 2 classes had reinforcement delays of 1 s and 15 s, respectively, and 2 other classes had reinforcement probabilities of 0.1 and 0.9. Then, 1 choice response was reinforced to a class previously associated with a better condition of reinforcement (e.g., 1-s delay or 1.0 probability), and a different response was reinforced to a class previously associated with a worse condition of reinforcement (0.1 probability or 0-s delay). Testing with all classes suggested that categorization was based on the relative reinforcement or hedonic value and not on the parametric details of reinforcement.
S L Astley; E A Wasserman
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Animal behavior processes     Volume:  25     ISSN:  0097-7403     ISO Abbreviation:  J Exp Psychol Anim Behav Process     Publication Date:  1999 Oct 
Date Detail:
Created Date:  1999-11-16     Completed Date:  1999-11-16     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7504289     Medline TA:  J Exp Psychol Anim Behav Process     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  415-32     Citation Subset:  IM; S    
Department of Psychology, Cornell College, Mount Vernon, Iowa 52314-1098, USA.
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MeSH Terms
Behavior, Animal
Choice Behavior
Columbidae / physiology*
Concept Formation / physiology*
Discrimination Learning / physiology*
Feeding Behavior / psychology*
Generalization (Psychology)
Reinforcement (Psychology)*
Visual Perception / physiology*
Grant Support

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

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