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Global and local processing of hierarchical visual stimuli in tufted Capuchin monkeys (Cebus apella)

By Giovanna Spinozzi and Carlo De Lillo


This article was published as Journal of Comparative Psychology, 2003, Vol. 117, No. 1, pp. 15-23. It is available from : \ud monkeys' (Cebus apella) relative accuracy in the processing of the global shape or the local features of hierarchical visual stimuli was assessed. Three experiments are presented featuring manipulations of the arrangement and the density of the local elements of the stimuli. The results showed a clear advantage for local level processing in this species, which is robust under manipulations of the density of the local elements of the stimuli. By contrast, the density of the component elements linearly affected accuracy in global processing. These findings, which support those from other studies in which a local superiority emerged in animals, challenge the generality of early claims concerning the adaptive value of global advantage in the processing of hierarchical visual patterns. (PsycINFO Database Record (c) 2009 APA, all rights reserved

Publisher: American Psychological Association, Inc.
Year: 2003
DOI identifier: 10.1037/0735-7036.117.1.15
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