Abstract
Functional stimulus equivalence has been demonstrated using a transfer of training design with matching-to-sample training in which two sample stimuli are associated with the same comparison stimulus (A-B, C-B; many-to-one matching). Equivalence is shown by training a new association (A-D) and demonstrating the presence of an emergent relation (C-D). In the present experiment, we show that symmetry training, in which a bidirectional association is trained between two stimuli (A-B, B-A, using successive stimulus presentations followed by reinforcement), can also produce functional equivalence using a transfer of training design (i.e., train B-C, test A-C). The results suggest that training pigeons in the substitutability of two stimuli may be sufficient to produce functional stimulus equivalence between them. The results also have implications for the development of an emergent transitive relation, because training on A-B and B-C relations results in the emergence of an untrained A-C relation, if B-A training also is provided.
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This research was supported by National Institute of Mental Health Grant 59194.
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Zentall, T.R., Clement, T.S. & Weaver, J.E. Symmetry training in pigeons can produce functional equivalences. Psychonomic Bulletin & Review 10, 387–391 (2003). https://doi.org/10.3758/BF03196496
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DOI: https://doi.org/10.3758/BF03196496