Equivalence classes in individuals with minimal verbal repertoires

Carr, Deborah, Wilkinson, K. M., Blackman, Derek E. and McIlvane, W. J. 2000. Equivalence classes in individuals with minimal verbal repertoires. Journal of the Experimental Analysis of Behavior 74 (1) , pp. 101-114. 10.1901/jeab.2000.74-101

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Abstract

Studies from two different laboratories tested for equivalence classes in individuals with severe mental retardation and minimal verbal repertoires. In the first study, 3 individuals learned several matching-to-sample performances: matching picture comparison stimuli to dictated-word sample stimuli (AB), matching those same pictures to printed letter samples (CB), and also matching the pictures to nonrepresentative forms (DB). On subsequent tests, all individuals immediately displayed Emergent Relations AC, AD, BC, BD, CD, and DC, together constituting a positive demonstration of equivalence (as defined by Sidman). The second study obtained a positive equivalence test outcome in 1 of 2 individuals with similarly minimal verbal repertoires. Taken together, these studies call into question previous assertions that equivalence classes are demonstrable only in individuals with well-developed language repertoires.

Item Type:	Article
Status:	Published
Schools:	Schools > Medicine
Subjects:	R Medicine > R Medicine (General)
Publisher:	Society for the Experimental Analysis of Behavior
ISSN:	0022-5002
Last Modified:	13 Mar 2023 15:52
URI:	https://orca.cardiff.ac.uk/id/eprint/59887

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