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Updated: Jan 20, 2026

The Evidence for Evolution and Common Ancestor
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Evolution of Speech: Anatomy and Control.

Bart de Boer1

  • 1Artificial Intelligence Laboratory, Vrije Universiteit Brussel, Belgium.

Journal of Speech, Language, and Hearing Research : JSLHR
|August 30, 2019
PubMed
Summary

The evolution of speech likely occurred gradually, with speech motor control being a key area of selection. Further research into motor control precursors in related species can provide empirical evidence for speech evolution.

Area of Science:

  • Evolutionary biology
  • Linguistics
  • Neuroscience

Background:

  • Language evolution is a complex field.
  • Understanding speech evolution requires an evolutionary perspective.
  • Motor control plays a crucial role in speech production.

Purpose of the Study:

  • Critically review research on speech evolution within the context of motor control.
  • Highlight the utility of an evolutionary approach to studying speech.
  • Explore methodologies for investigating evolutionary questions in speech.

Main Methods:

  • Comparative research with related species (e.g., great apes).
  • Experimental and observational research.
  • Computer and mathematical modeling.

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Main Results:

  • Speech adaptations likely evolved gradually.
  • Speech motor control is a probable area of significant evolutionary selection.
  • Precursors for speech motor control are present in closely related species.

Conclusions:

  • Empirical evidence for speech evolution should be sought in speech motor control.
  • Research in this area is currently in its early stages.
  • Comparative and theoretical analyses support gradual evolution of speech adaptations.