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Temas em Psicologia

Print version ISSN 1413-389X


CAMPOS, Rodolfo S.; BRINO, Ana Leda F.  and  GALVAO, Olavo F.. Expanding arbitrary relations repertoire by exclusion in Sapajus sp. Temas psicol. [online]. 2013, vol.21, n.1, pp. 31-48. ISSN 1413-389X.

The procedure of exclusion may expand children's repertoire of arbitrary relations resulting in errorless learning, but although choice by exclusion has been reported in a variety of species, it is not followed by learning of the new relations. The objective of this paper was to verify if capuchins would choose by exclusion, and if they subsequently would acquire the new arbitrary relations as outcome of exclusion. The capuchin monkey had previously acquired a repertory of 5 A-B and their symmetric B-A arbitrary relations in delayed-matching to-sample (DMTS) with five or more choices. Using a two-choice DMTS, new A-C relations were introduced using non paired B stimuli as S- to verify exclusion. The subject excluded non paired B and chose the new C stimuli. However, performance was disrupted in trials with only C stimuli as comparisons; training with a blank stimulus substituting either comparison in turns was ineffective. Further studies using trials with more than two comparison stimuli will verify arbitrary relations' learning in capuchins after exclusion.

Keywords : Arbitrary relations; exclusion; blank comparison; Sapajus sp.

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