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Related Experiment Videos

Interspecies semantic communication in two forest primates.

K Zuberbühler1

  • 1Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.

Proceedings. Biological Sciences
|May 23, 2000
PubMed
Summary

Diana monkeys understand Campbell's monkey alarm calls, responding appropriately to predator-specific vocalizations. This suggests primates use diverse acoustic signals for mental representations.

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Cognition·2000

Area of Science:

  • Primate behavior
  • Bioacoustics
  • Interspecies communication

Background:

  • West African Diana monkeys and Campbell's monkeys form mixed-species groups.
  • Both species use distinct alarm calls for predators like eagles and leopards.

Purpose of the Study:

  • To determine if Diana monkeys comprehend Campbell's monkey alarm calls.
  • To investigate if Diana monkeys understand the semantic content of these calls.

Main Methods:

  • Playback experiments using Campbell's monkey alarm calls.
  • Priming Diana monkeys with specific alarm calls before predator vocalizations.

Main Results:

  • Diana monkeys reacted to Campbell's alarm calls as if the predator was present.
  • Monkeys used call semantics to anticipate predator presence, showing predictive understanding.

Conclusions:

  • Non-human primates can interpret acoustic signals from other species.
  • This supports the idea that primates use diverse sounds as labels for mental representations.

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