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The development of emergent sample-specific
behavior in pigeons' many-to-one matching Peter J. Urcuioli, Karen M. Lionello-DeNolf, Andrea M. Friedrich, and Jada N. Pierce Purdue University, West Lafayette, USA Two experiments examined the emergence of sample-specific behavior to conditional stimuli that occasioned the same comparison choices as other conditional stimuli to which different patterns of sample responding were explicitly required. When the "allowable" response patterns to the target samples were unrestricted, pigeons did not respond differentially to them even after learning to match accurately with those samples. By contrast, when comparison presentation following the target samples depended upon completion of either of the two response patterns explicitly conditioned to the other samples, differential responding did emerge in some pigeons. Moreover, the differential response patterns that emerged were segregated in such a way that the pattern to each target sample corresponded to the one explicitly required to the other sample with which it shared a common comparison choice. These results will be discussed in relation to the emergent sample behavior described by Manabe, Kawashima, and Staddon (JEAB, 1995) for budgerigars and the analysis by Saunders and Williams (JEAB, 1999) of the Manabe et al. findings. Keywords: emergent behavior, pigeons, many-to-one matching |
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