Cultural evolution: implications for understanding the human language faculty and its evolution

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Abstract

Human language is unique among the communication systems of the natural world: it is socially learned and, as a consequence of its recursively compositional structure, offers open-ended communicative potential. The structure of this communication system can be explained as a consequence of the evolution of the human biological capacity for language or the cultural evolution of language itself. We argue, supported by a formal model, that an explanatory account that involves some role for cultural evolution has profound implications for our understanding of the biological evolution of the language faculty: under a number of reasonable scenarios, cultural evolution can shield the language faculty from selection, such that strongly constraining language-specific learning biases are unlikely to evolve. We therefore argue that language is best seen as a consequence of cultural evolution in populations with a weak and/or domain-general language faculty.
Original languageEnglish
Pages (from-to)3591-3603
Number of pages13
JournalPhilosophical Transactions of the Royal Society B: Biological Sciences
Volume363
Issue number1509
DOIs
Publication statusPublished - 12 Nov 2008

Keywords

  • language
  • communication
  • language faculty
  • cultural evolution
  • biological evolution

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