Effects of heterogeneous controlling relations on tests of transitivity and equivalence: An exploratory study

The establishment of sample/S+ (select) or sample/S− (reject) controlling relations affects equivalence-class formation. The present experiment aimed to evaluate transitivity and equivalence test results when, during training, some of the baseline relations among stimuli presented during tests were...

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Bibliographic Details
Published in:European journal of behavior analysis 2017-07, Vol.18 (2), p.251-263
Main Authors: Perez, William F., Tomanari, Gerson Y., Vaidya, Manish
Format: Article
Language:English
Subjects:
equivalence relations
humans
MTS-OR
reject control
select control
stimulus control competition
Stimulus equivalence
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Summary:The establishment of sample/S+ (select) or sample/S− (reject) controlling relations affects equivalence-class formation. The present experiment aimed to evaluate transitivity and equivalence test results when, during training, some of the baseline relations among stimuli presented during tests were established under reject control and others were established under select control. Five participants had learned in a previous study to respond to conditional discriminations AB, BC, and CD under reject control and to DE and EF relations under select control. In the present investigation, such baseline-trained relations were reviewed and, after that, (1) one-node CE-transitivity and EC-equivalence tests, (2) two-node BE-transitivity and two-node EB-equivalence tests, and (3) four-node AF-transitivity and four-node FA-equivalence tests were carried out. Results suggest that during transitivity and equivalence tests involving one stimulus set related under reject and another under select control (CE and EC tests), participants scored high. Increasing the number of nodes involved during tests, however, resulted in variability. The possibility that the commonly observed failures of equivalence class formation may be the result of heterogeneous controlling relations among the stimuli comprising the set or putative equivalence class is discussed.
ISSN:1502-1149
2377-729X
DOI:10.1080/15021149.2017.1309957