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Compositional structure can emerge without generational transmission.

Limor Raviv1, Antje Meyer2, Shiri Lev-Ari3

  • 1Max Planck Institute for Psycholinguistics, Nijmegen, the Netherlands.

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Summary
This summary is machine-generated.

Compositional languages can emerge within a single generation in closed communities. This study shows linguistic structure formation doesn't require new learners, challenging previous theories on language evolution.

Keywords:
Artificial language experimentsCommunicationCompositionalityInput variabilityIterated learningLanguage evolution

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Area of Science:

  • Evolutionary Linguistics
  • Cognitive Science
  • Experimental Psychology

Background:

  • Novel signal systems tend to become more structured over time.
  • Previous research suggested compositional languages require multi-generational transmission.

Purpose of the Study:

  • To investigate if compositional languages can emerge within a single generation in a closed community.
  • To test the role of compressibility pressures in language structure formation.

Main Methods:

  • A communication experiment with micro-societies of four participants.
  • Participants used an artificial language to refer to novel meanings in alternating dyads.
  • Incorporated compressibility pressures: multiple interaction partners and an expanding meaning space.

Main Results:

  • Languages showed significant structural development over time.
  • Participants converged on shared, stable, and compositional lexicons.
  • Linguistic structure emerged rapidly without new learners.

Conclusions:

  • Compositional languages can emerge within a single generation.
  • New learners are not essential for the formation of linguistic structure.
  • Findings have implications for understanding sign language and creole development.