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Related Experiment Videos

Tinkering with minds from the past

M D Hauser1

  • 1Department of Anthropology, Harvard University, Cambridge, MA 02138, USA.

Ciba Foundation Symposium
|January 1, 1997
PubMed
Summary

Human infants and primates show similar numerical skills before language develops. Further research is needed to understand how language enhances human numerical cognition beyond animal capabilities.

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Area of Science:

  • Comparative cognition
  • Developmental psychology
  • Evolutionary psychology

Background:

  • Cognitive scientists often assume non-human animals lack complex conceptual representations without language.
  • Human infants also possess different conceptual abilities than adults, yet are often treated as miniature adults.
  • A comparative approach is crucial for understanding human cognition, especially domain-specific knowledge systems.

Purpose of the Study:

  • To advocate for a comparative perspective in human cognition research.
  • To establish cross-species methods for studying cognitive capacities.
  • To investigate the evolution of numerical abilities.

Main Methods:

  • Utilized the preferential looking time technique, originally designed for prelinguistic infants.
  • Applied this method to two non-human primate species from different phylogenetic branches.
  • Focused on assessing spontaneous cognitive capacities without training.

Main Results:

  • Human infants and non-human primates demonstrated indistinguishable numerical competence up to a specific age.
  • This suggests a shared foundation for numerical understanding across species.
  • Highlights the importance of species-specific methodologies in cognitive research.

Conclusions:

  • Human infants' and non-human primates' numerical abilities are comparable in the absence of language.
  • Language and other cognitive factors drive the divergence in numerical sophistication between humans and animals.
  • Further investigation is required to understand the limits of non-human animal numerical capacities.

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