Document Detail

Stimulus class formation and stimulus-reinforcer relations.
MedLine Citation:
PMID:  2921589     Owner:  NLM     Status:  MEDLINE    
This study examined stimulus class membership established via stimulus-reinforcer relations. Mentally retarded subjects learned conditional discriminations with four two-member sets of visual stimuli (A, B, C, and D). On arbitrary-matching trials, they selected comparison stimuli B1 and B2 conditionally upon samples A1 and A2, respectively, and C1 and C2 conditionally upon B1 and B2, respectively. On identity-matching trials, they selected all stimuli as comparisons conditionally upon identical stimuli as samples. Throughout training, correct selections of A1, B1, C1, and D1 were followed by one reinforcer, R1, and those of A2, B2, C2, and D2 were followed by another, R2. Subsequent tests documented the formation of two four-member stimulus classes, A1-B1-C1-D1 and A2-B2-C2-D2. The class membership of the A, B, and C stimuli could have been based on equivalence relations that resulted from the arbitrary-matching training. D1 and D2 had never appeared on arbitrary-matching trials, however. Their class membership must have been based on relations with R1 and R2, respectively. Results thus confirm a previous finding that stimulus classes can be expanded via stimulus-reinforcer relations. They also define more precisely the potential nature of those classes and the conditions under which class membership can be established.
W V Dube; W J McIlvane; R W Maguire; H A Mackay; L T Stoddard
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the experimental analysis of behavior     Volume:  51     ISSN:  0022-5002     ISO Abbreviation:  J Exp Anal Behav     Publication Date:  1989 Jan 
Date Detail:
Created Date:  1989-04-14     Completed Date:  1989-04-14     Revised Date:  2010-09-09    
Medline Journal Info:
Nlm Unique ID:  0203727     Medline TA:  J Exp Anal Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  65-76     Citation Subset:  IM    
Behavioral Neurology Department, E.K. Shriver Center, Waltham, Massachusetts 02254.
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MeSH Terms
Discrimination Learning*
Form Perception*
Mental Retardation / psychology*
Pattern Recognition, Visual*
Psychomotor Performance
Grant Support

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

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