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Human sound systems are shaped by post-Neolithic changes in bite configuration.

D E Blasi1,2,3,4,5, S Moran6,2, S R Moisik7

  • 1Department of Comparative Linguistics, University of Zurich, 8032 Zurich, Switzerland. damian.blasi@uzh.ch.

Science (New York, N.Y.)
|March 16, 2019
PubMed
Summary
This summary is machine-generated.

Biological changes in the human bite after the Neolithic period facilitated the evolution of labiodental sounds like "f" and "v". This suggests that cultural shifts, such as dietary changes, can influence human biology and language development.

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Area of Science:

  • Paleoanthropology
  • Speech Biomechanics
  • Historical Linguistics
  • Ethnography

Background:

  • Linguistic diversity is traditionally viewed as separate from post-Homo sapiens biological evolution.
  • The emergence of specific speech sounds is often attributed solely to historical linguistic factors.

Observation:

  • Evidence from multiple disciplines suggests labiodental sounds (e.g., "f", "v") emerged after the Neolithic period.
  • Dietary shifts and food-processing technologies altered human dentition, changing the bite from edge-to-edge to an overbite/overjet configuration in adulthood.

Findings:

  • The modification of the human bite created favorable conditions for the innovation and stability of labiodental sounds.
  • This interdisciplinary study links cultural practices (dietary changes) to biological adaptations affecting speech.

Implications:

  • Language evolution is influenced by both historical linguistic pathways and culturally driven biological changes.
  • This research challenges the notion of language as solely independent of human biological evolution, highlighting a feedback loop between culture and biology.