Abstract:
:Preschool children were taught four two-choice match-to-sample conditional discriminations with 10 arbitrary visual stimuli. For 6 participants, 2 of the 10 stimuli served as the sample, or conditional, stimuli in all discriminations. For 5 additional participants, the same pair of stimuli served as the discriminative, or comparison, stimuli in all discriminations. Equivalence classes were established with more participants in the latter group, replicating prior research with participants with retardation. Four participants, in whom equivalence classes were established and who were available for further participation, were exposed to new conditional discriminations without trial-by-trial feedback and involving some novel and some familiar stimuli. Consistent conditional responding was observed, and tests for inclusion of the novel stimuli in the original classes showed class expansion. Training to reverse the unreinforced conditional performances produced a reversal of class membership in 3 of 4 participants, an outcome not consistent with other studies. The results are discussed with respect to the interaction of class structure and size.
journal_name
J Exp Anal Behavjournal_title
Journal of the experimental analysis of behaviorauthors
Saunders RR,Drake KM,Spradlin JEdoi
10.1901/jeab.1999.71-195subject
Has Abstractpub_date
1999-03-01 00:00:00pages
195-214issue
2eissn
0022-5002issn
1938-3711journal_volume
71pub_type
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