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The central problem is still evolutionary stability.

Sławomir Wacewicz1, Przemysław Żywiczyński1

  • 1Center for Language Evolution Studies, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland. wacewicz@umk.pl; Przemyslaw.Zywiczynski@umk.plhttps://cles.umk.pl/.

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This study explores the emergence of language and multimodal communication, suggesting a unified explanation for "unleashed expression." It critically examines the role of partner choice in driving these evolutionary developments.

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Area of Science:

  • Evolutionary biology
  • Linguistics
  • Communication studies

Background:

  • The emergence of complex communication systems like language is a key question in evolutionary studies.
  • Existing theories often focus on specific modalities, lacking a unified framework.

Purpose of the Study:

  • To evaluate Heintz & Scott-Phillips's "unleashing leashed expression" metaphor.
  • To explore a unified explanation for the evolution of language and multimodal communication.
  • To critically assess the proposed selection pressures, specifically partner choice ecology.

Main Methods:

  • Conceptual analysis of evolutionary theories.
  • Review of existing literature on language evolution and multimodal communication.
  • Critique of partner choice as the primary driver for unleashed expression.

Main Results:

  • The "unleashing leashed expression" metaphor provides a valuable framework for understanding diverse communicative behaviors.
  • A unified explanation for the emergence of language and multimodal communication is supported.
  • The proposed reliance on partner choice ecology as the sole selection pressure is questioned.

Conclusions:

  • The study supports a broader view of communicative evolution beyond just language.
  • Further research is needed to fully understand the interplay of selection pressures driving "unleashed expression."
  • The partner choice ecology hypothesis requires more robust empirical support.