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Proceedings of the Royal Society B: Biological Sciences logoLink to Proceedings of the Royal Society B: Biological Sciences
. 1997 Oct 22;264(1387):1429–1434. doi: 10.1098/rspb.1997.0199

Are faces of different species perceived categorically by human observers?

R Campbell 1, O Pascalis 1, M Coleman 1, S B Wallace 1, P J Benson 1
PMCID: PMC1688699  PMID: 9364783

Abstract

What are the species boundaries of face processing? Using a face-feature morphing algorithm, image series intermediate between human, monkey (macaque), and bovine faces were constructed. Forced-choice judgement of these images showed sharply bounded categories for upright face images of each species. These predicted the perceptual discrimination boundaries for upright monkey-cow and cow-human images, but not human-monkey images. Species categories were also well-judged for inverted face images, but these did not give sharpened discrimination (categorical perception) at the category boundaries. While categorical species judgements are made reliably, only the distinction between primate faces and cow faces appears to be categorically perceived, and only in upright faces. One inference is that humans may judge monkey faces in terms of human characteristics, albeit distinctive ones.

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Selected References

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  1. Assal G., Favre C., Anderes J. P. Non-reconnaissance d'animaux familiers chez un paysan. Zoo-agnosie ou prosopagnosie pour les animaux. Rev Neurol (Paris) 1984;140(10):580–584. [PubMed] [Google Scholar]
  2. Beale J. M., Keil F. C. Categorical effects in the perception of faces. Cognition. 1995 Dec;57(3):217–239. doi: 10.1016/0010-0277(95)00669-x. [DOI] [PubMed] [Google Scholar]
  3. Bornstein B., Sroka H., Munitz H. Prosopagnosia with animal face agnosia. Cortex. 1969 Jun;5(2):164–169. doi: 10.1016/s0010-9452(69)80027-4. [DOI] [PubMed] [Google Scholar]
  4. Bruce V., Burton A. M., Dench N. What's distinctive about a distinctive face? Q J Exp Psychol A. 1994 Feb;47(1):119–141. doi: 10.1080/14640749408401146. [DOI] [PubMed] [Google Scholar]
  5. Bruyer R., Laterre C., Seron X., Feyereisen P., Strypstein E., Pierrard E., Rectem D. A case of prosopagnosia with some preserved covert remembrance of familiar faces. Brain Cogn. 1983 Jul;2(3):257–284. doi: 10.1016/0278-2626(83)90014-3. [DOI] [PubMed] [Google Scholar]
  6. Diamond R., Carey S. Developmental changes in the representation of faces. J Exp Child Psychol. 1977 Feb;23(1):1–22. doi: 10.1016/0022-0965(77)90069-8. [DOI] [PubMed] [Google Scholar]
  7. Diamond R., Carey S. Why faces are and are not special: an effect of expertise. J Exp Psychol Gen. 1986 Jun;115(2):107–117. doi: 10.1037//0096-3445.115.2.107. [DOI] [PubMed] [Google Scholar]
  8. Farah M. J., Tanaka J. W., Drain H. M. What causes the face inversion effect? J Exp Psychol Hum Percept Perform. 1995 Jun;21(3):628–634. doi: 10.1037//0096-1523.21.3.628. [DOI] [PubMed] [Google Scholar]
  9. Goldstein A. G. Recognition of inverted photographs of faces by children and adults. J Genet Psychol. 1975 Sep;127(1ST):109–123. doi: 10.1080/00221325.1975.10532361. [DOI] [PubMed] [Google Scholar]
  10. LIBERMAN A. M., HARRIS K. S., HOFFMAN H. S., GRIFFITH B. C. The discrimination of speech sounds within and across phoneme boundaries. J Exp Psychol. 1957 Nov;54(5):358–368. doi: 10.1037/h0044417. [DOI] [PubMed] [Google Scholar]
  11. McNeil J. E., Warrington E. K. Prosopagnosia: a face-specific disorder. Q J Exp Psychol A. 1993 Feb;46(1):1–10. doi: 10.1080/14640749308401064. [DOI] [PubMed] [Google Scholar]
  12. O'Toole A. J., Deffenbacher K. A., Valentin D., Abdi H. Structural aspects of face recognition and the other-race effect. Mem Cognit. 1994 Mar;22(2):208–224. doi: 10.3758/bf03208892. [DOI] [PubMed] [Google Scholar]
  13. Valentine T. A unified account of the effects of distinctiveness, inversion, and race in face recognition. Q J Exp Psychol A. 1991 May;43(2):161–204. doi: 10.1080/14640749108400966. [DOI] [PubMed] [Google Scholar]
  14. Valentine T., Bruce V. The effects of distinctiveness in recognising and classifying faces. Perception. 1986;15(5):525–535. doi: 10.1068/p150525. [DOI] [PubMed] [Google Scholar]
  15. Vokey J. R., Read J. D. Familiarity, memorability, and the effect of typicality on the recognition of faces. Mem Cognit. 1992 May;20(3):291–302. doi: 10.3758/bf03199666. [DOI] [PubMed] [Google Scholar]
  16. Young M. P., Yamane S. Sparse population coding of faces in the inferotemporal cortex. Science. 1992 May 29;256(5061):1327–1331. doi: 10.1126/science.1598577. [DOI] [PubMed] [Google Scholar]

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