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Form and function in religious signaling under pathogen stress.

Paul Swartwout1, Benjamin Grant Purzycki, Richard Sosis

  • 1Department of Anthropology, University of Connecticut, Storrs, CT 06269-2176, USA. paul.swartwout@uconn.edu

The Behavioral and Brain Sciences
|February 1, 2012
PubMed
Summary

Religious traditions may evolve due to pathogen stress, promoting out-group avoidance. However, some rituals increase infection risk, and proselytizing/economic exchange necessitate out-group interactions, complicating this evolutionary explanation.

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Area of Science:

  • Evolutionary biology
  • Religious studies
  • Social psychology

Background:

  • Pathogen stress is hypothesized to drive religious evolution via out-group avoidance.
  • Religious rituals and proselytizing behaviors present potential contradictions to this hypothesis.

Purpose of the Study:

  • To examine the complex relationship between pathogen stress, religious traditions, and social interaction.
  • To evaluate the role of religious rituals and intergroup dynamics in the evolution of religious traditions.

Main Methods:

  • The study reviews existing literature on evolutionary psychology, anthropology, and sociology.
  • It analyzes theoretical models of cultural evolution and disease avoidance.

Main Results:

  • Many religious rituals may inadvertently increase infection susceptibility.
  • Religious expansion often relies on proselytizing, demanding out-group engagement.
  • Economic exchange within religious communities can foster pluralism and out-group interaction.

Conclusions:

  • The pathogen stress model offers a partial explanation but requires refinement.
  • Religious evolution is influenced by a complex interplay of pathogen avoidance, ritualistic practices, and social/economic factors necessitating out-group contact.