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Cross-species differences in color categorization.

Joël Fagot1, Julie Goldstein, Jules Davidoff

  • 1CNRS, INCM, and Université de la Méditerranée, Marseille, France. fagot@incm.cnrs-mrs.fr

Psychonomic Bulletin & Review
|August 9, 2006
PubMed
Summary
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Human color categories are linguistic, not innate to primate vision. Studies show humans create sharp color boundaries, unlike baboons, suggesting language shapes our perception of color.

Area of Science:

  • Cognitive Science
  • Linguistics
  • Primatology

Background:

  • Berlin and Kay (1969) proposed color terms originate from primate visual systems.
  • Recent evidence suggests linguistic origins for color categories (Davidoff et al., 1999).
  • Primate visual systems lack clear neurophysiological boundaries for color categorization.

Purpose of the Study:

  • Investigate the origin of color categories.
  • Test whether color categories are innate to primate vision or linguistically derived.
  • Compare human and baboon color categorization behavior.

Main Methods:

  • A matching-to-sample task involving colors across the blue/green boundary.
  • Human and baboon subjects performed the same color matching task.

Related Experiment Videos

  • Data were modeled to identify color category boundaries.

    • Main Results:

    • Human subjects demonstrated sharp color category boundaries near the midpoint of training colors.
    • Baboons, despite adequate color discrimination, showed no single boundary.
    • Baboons exhibited two boundaries near their training stimuli, not a generalized category.

    Conclusions:

    • The study provides no support for color categories being explicitly instantiated in the primate color vision system.
    • Findings suggest human color categorization is influenced by linguistic factors rather than solely visual processing.
    • The research highlights the divergence in color categorization strategies between humans and baboons.