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Evolution of universal grammar.

M A Nowak1, N L Komarova, P Niyogi

  • 1Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA. nowak@ias.edu

Science (New York, N.Y.)
|January 6, 2001
PubMed
Summary
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This study introduces a mathematical model for language evolution, revealing a coherence threshold necessary for universal grammar to enable effective communication and the emergence of complex language through natural selection.

Area of Science:

  • Linguistics
  • Evolutionary Biology
  • Computational Linguistics

Background:

  • Universal grammar (UG) is central to language acquisition, defining the scope of grammatical hypotheses and input evaluation in children.
  • The evolutionary origins of universal grammar pose a significant challenge for evolutionary biology.

Purpose of the Study:

  • To develop a mathematical framework for understanding the evolutionary dynamics of grammar learning.
  • To identify the conditions under which universal grammar facilitates coherent communication within a population.

Main Methods:

  • Mathematical modeling of evolutionary game theory applied to grammar learning.
  • Analysis of selection dynamics within a single universal grammar.
  • Investigation of competition between different universal grammars.

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Main Results:

  • A 'coherence threshold' was identified, defining the condition for universal grammar to enable coherent communication.
  • Selection of grammars within a universal grammar was studied.
  • Competition dynamics between distinct universal grammars were analyzed.

Conclusions:

  • The study provides conditions under which natural selection favors the emergence of rule-based, generative grammars essential for complex human language.
  • The mathematical framework offers insights into the evolutionary pathways of language acquisition mechanisms.