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Universal and uniquely human factors in spontaneous number perception

Author

Listed:
  • Stephen Ferrigno

    (Department of Brain and Cognitive Sciences)

  • Julian Jara-Ettinger

    (Department of Brain and Cognitive Sciences)

  • Steven T. Piantadosi

    (Department of Brain and Cognitive Sciences)

  • Jessica F. Cantlon

    (Department of Brain and Cognitive Sciences)

Abstract

A capacity for nonverbal numerical estimation is widespread among humans and animals. However, it is currently unclear whether numerical percepts are spontaneously extracted from the environment and whether nonverbal perception is influenced by human exposure to formal mathematics. We tested US adults and children, non-human primates, and numerate and innumerate Tsimane’ adults on a quantity task in which they could choose to categorize sets of dots on the basis of number alone, surface area alone or a combination of the two. Despite differences in age, species and education, subjects are universally biased to base their judgments on number as opposed to the alternatives. Numerical biases are uniquely enhanced in humans compared to non-human primates, and correlated with degree of mathematics experience in both the US and Tsimane’ groups. We conclude that humans universally and spontaneously extract numerical information, and that human nonverbal numerical perception is enhanced by symbolic numeracy.

Suggested Citation

  • Stephen Ferrigno & Julian Jara-Ettinger & Steven T. Piantadosi & Jessica F. Cantlon, 2017. "Universal and uniquely human factors in spontaneous number perception," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms13968
    DOI: 10.1038/ncomms13968
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    Cited by:

    1. Elisa Castaldi & Antonella Pomè & Guido Marco Cicchini & David Burr & Paola Binda, 2021. "The pupil responds spontaneously to perceived numerosity," Nature Communications, Nature, vol. 12(1), pages 1-8, December.

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