Matching visual stimuli on the basis of global and local features by chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta) |
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| Authors: | William D. Hopkins David A. Washburn |
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| Affiliation: | (1) Department of Psychology, Berry College, Mount Berry, GA 30149, USA,;(2) Department of Psychology, Sonny Carter Life Sciences Center, Georgia State University, Atlanta, GA 30303, USA,;(3) Living Links Center for the Advanced Study of Ape and Human Evolution, Division of Behavioral Biology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA, |
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| Abstract: | This study was designed to examine whether chimpanzees and monkeys exhibit a global-to-local precedence in the processing of hierarchically organized compound stimuli, as has been reported for humans. Subjects were tested using a sequential matching-to-sample paradigm using stimuli that differed on the basis of their global configuration or local elements, or on both perceptual attributes. Although both species were able to discriminate stimuli on the basis of their global configuration or local elements, the chimpanzees exhibited a global-to-local processing strategy, whereas the rhesus monkeys exhibited a local-to-global processing strategy. The results suggest that perceptual and attentional mechanisms underlying information-processing strategies may account for differences in learning by primates. Accepted after revision: 11 September 2001 Electronic Publication |
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| Keywords: | Visual perception Global– local processing Chimpanzees Monkeys Gestalt perception |
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