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This study explores music evolution, proposing cooperative intent signaling as a key function. However, it critiques narrow, unidirectional evolutionary explanations for music's origins.

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Area of Science:

  • Evolutionary Biology
  • Musicology
  • Behavioral Ecology

Background:

  • The evolutionary origins of music remain a complex and debated topic.
  • Previous theories have proposed various functions for music's development, including social bonding and sexual selection.
  • Mehr et al. propose a specific unitary proper function for music's evolution.

Purpose of the Study:

  • To evaluate the hypothesis that music evolved primarily as a signal of cooperative intent.
  • To examine the proposed mechanisms of coalition signaling and (allo)parental attention signaling.
  • To critique "ultimate" causal explanations for music evolution that rely on narrow, unidirectional factors.

Main Methods:

  • Conceptual analysis of evolutionary theories of music.
  • Critique of the unitary proper function hypothesis.
  • Examination of signaling theory in the context of music evolution.

Main Results:

  • Acknowledges the likely role of signaling in music's evolution.
  • Rejects the sufficiency of a single "proper function" to explain music's origins.
  • Challenges explanations that focus on a limited set of unidirectional causal factors.

Conclusions:

  • While signaling is important, music's evolution is likely driven by multiple, interacting factors.
  • A more comprehensive, multi-causal approach is needed to fully understand music's evolutionary trajectory.
  • The unitary proper function of cooperative intent signaling is insufficient as an "ultimate" explanation for music's evolution.