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Partial connectivity increases cultural accumulation within groups.

Maxime Derex1, Robert Boyd2

  • 1Institute of Human Origins, Arizona State University, Tempe, AZ 85287; maxime.derex@gmail.com.

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PubMed
Summary
This summary is machine-generated.

Population connectedness impacts technological innovation. Fully connected groups lose cultural diversity, hindering complex technology development, unlike partially connected groups which foster innovation through diversity.

Keywords:
cultural evolutioninnovationpopulation sizesocial networktechnological trajectory

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Area of Science:

  • Evolutionary anthropology
  • Social network analysis
  • Complexity science

Background:

  • Complex technologies emerge through cumulative cultural evolution over generations.
  • Population size and connectedness are hypothesized to positively influence technological complexity.

Purpose of the Study:

  • To investigate how group connectivity affects the accumulation of innovations in a complex environment.
  • To compare cultural diversity and technological complexity between fully and partially connected groups.

Main Methods:

  • A computer-based simulation experiment was conducted.
  • Groups of the same size with varying levels of connectivity (full vs. partial) were simulated.
  • Innovation accumulation was tracked within a complex fitness landscape.

Main Results:

  • Fully connected groups exhibited reduced cultural diversity due to strong conformity.
  • Partially connected groups maintained higher cultural diversity.
  • Partially connected groups developed more complex technologies, some never emerging in fully connected groups.

Conclusions:

  • High connectivity can stifle innovation by reducing cultural diversity.
  • Population fragmentation and interaction patterns are crucial for understanding the evolution of cultural complexity.
  • Partial isolation may be essential for the development of highly complex technologies.