We studied gaze perception in three infant chimpanzees (Pan troglodytes), aged 10-32 weeks, using a two-choice preferential-looking paradigm. The infants were presented with two photographs of a human face: (a) with the eyes open or closed, and (b) with a direct or an averted gaze. We found that the chimpanzees preferred looking at the direct-gaze face. However, in the context of scrambled faces, the infants showed no difference in gaze discrimination between direct and averted gazes. These findings suggest that gaze perception by chimpanzees may be influenced by the surrounding facial context. The relationship between gaze perception, face processing, and the adaptive significance of gaze perception are discussed from an evolutionary perspective. (C) 2003 Elsevier Science B.V. All rights reserved.
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Yerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USAYerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Schaeffer, J. A.
Russell, J. L.
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Yerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USAYerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Russell, J. L.
Nir, T.
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Yerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USAYerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Nir, T.
Taglialatela, J. P.
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Yerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Clayton State Univ, Dept Nat Sci, Morrow, GA 30260 USAYerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Taglialatela, J. P.
Hopkins, W. D.
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Yerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
Agnes Scott Coll, Dept Psychol, Decatur, GA 30030 USAYerkes Natl Primate Res Ctr, Dept Psychobiol, Atlanta, GA 30329 USA
机构:
Georgia State Univ, Atlanta, GA 30302 USA
Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
Univ St Andrews, St Andrews KY16 9AJ, Fife, Scotland
Emory Univ, Atlanta, GA 30322 USAGeorgia State Univ, Atlanta, GA 30302 USA
Hall, K.
Byrne, R. W.
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Univ St Andrews, St Andrews KY16 9AJ, Fife, ScotlandGeorgia State Univ, Atlanta, GA 30302 USA
Byrne, R. W.
Oram, M. W.
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Univ St Andrews, St Andrews KY16 9AJ, Fife, ScotlandGeorgia State Univ, Atlanta, GA 30302 USA
Oram, M. W.
Campbell, M. W.
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Emory Univ, Atlanta, GA 30322 USAGeorgia State Univ, Atlanta, GA 30302 USA
Campbell, M. W.
Eppley, T. M.
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Emory Univ, Atlanta, GA 30322 USAGeorgia State Univ, Atlanta, GA 30302 USA
Eppley, T. M.
de Waal, F. B.
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Emory Univ, Atlanta, GA 30322 USAGeorgia State Univ, Atlanta, GA 30302 USA
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Kyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Kyoto Univ, Wildlife Res Ctr, Kumamoto Sanctuary, Kyoto, JapanKyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Sato, Yutaro
Kano, Fumihiro
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Kyoto Univ, Wildlife Res Ctr, Kumamoto Sanctuary, Kyoto, Japan
Kyoto Univ, Inst Adv Studies, Kyoto, JapanKyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Kano, Fumihiro
Morimura, Naruki
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Kyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Kyoto Univ, Wildlife Res Ctr, Kumamoto Sanctuary, Kyoto, JapanKyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Morimura, Naruki
Tomonaga, Masaki
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机构:Kyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Tomonaga, Masaki
Hirata, Satoshi
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Kyoto Univ, Wildlife Res Ctr, Kyoto, Japan
Kyoto Univ, Wildlife Res Ctr, Kumamoto Sanctuary, Kyoto, JapanKyoto Univ, Wildlife Res Ctr, Kyoto, Japan