Impartial Institutions, Pathogen Stress and the Expanding Social Network

Abstract

Anthropologists have documented substantial cross-society variation in people’s willingness to treat strangers with impartial, universal norms versus favoring members of their local community. Researchers have proposed several adaptive accounts for these differences. One variant of the pathogen stress hypothesis predicts that people will be more likely to favor local in-group members when they are under greater infectious disease threat. The material security hypothesis instead proposes that institutions that permit people to meet their basic needs through impartial interactions with strangers reinforce a tendency toward impartiality, whereas people lacking such institutions must rely on local community members to meet their basic needs. Some studies have examined these hypotheses using self-reported preferences, but not with behavioral measures. We conducted behavioral experiments in eight diverse societies that measure individuals’ willingness to favor in-group members by ignoring an impartial rule. Consistent with the material security hypothesis, members of societies enjoying better-quality government services and food security show a stronger preference for following an impartial rule over investing in their local in-group. Our data show no support for the pathogen stress hypothesis as applied to favoring in-groups and instead suggest that favoring in-group members more closely reflects a general adaptive fit with social institutions that have arisen in each society.

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References

  1. Alesina, A., Devleeschauwer, A., Easterly, W., Kurlat, S., & Wacziarg, R. (2003). Fractionalization. Journal of Economic Growth, 8, 155–194.

    Article  Google Scholar 

  2. Aron, A., Aron, E. N., & Smollan, D. (1992). Inclusion of other in the self scale and the structure of interpersonal closeness. Journal of Personality and Social Psychology, 63, 596.

    Article  Google Scholar 

  3. Banfield, E. C. (1958). The moral basis of a backward society. Glencoe: Free Press.

    Google Scholar 

  4. Bateson, M., Nettle, D., & Roberts, G. (2006). Cues of being watched enhance cooperation in a real-world setting. Biology Letters, 2, 412–414.

    Article  Google Scholar 

  5. Bowles, S. (1998). Endogenous preferences: the cultural consequences of markets and other economic institutions. Journal of Economic Literature, 36, 75–111.

    Google Scholar 

  6. Bowles, S. (2011). Is liberal society a parasite on tradition? Philosophy and Public Affairs, 39, 46–81.

    Article  Google Scholar 

  7. Bowles, S., & Gintis, H. (2004). Persistent parochialism: trust and exclusion in ethnic networks. Journal of Economic Behavior and Organization, 55, 1–23.

    Article  Google Scholar 

  8. Buchan, N. R., Grimalda, G., Wilson, R., Brewer, M., Fatas, E., & Foddy, M. (2009). Globalization and human cooperation. Proceedings of the National Academy of Sciences, 106, 4138–4142.

    Article  Google Scholar 

  9. Cashdan, E., and Steele, M. (2013). Pathogen prevalence, group bias, and collectivism in the standard cross-cultural sample. Human Nature:1–17.

  10. Dunbar, R. (2008). Cognitive constraints on the structure and dynamics of social networks. Group Dynamics: Theory, Research, and Practice, 12, 7.

    Article  Google Scholar 

  11. Fershtman, C., Gneezy, U., & Verboven, F. (2005). Discrimination and nepotism: the efficiency of the anonymity rule. The Journal of Legal Studies, 34, 371–396.

    Article  Google Scholar 

  12. Fincher, C. L., & Thornhill, R. (2012). Parasite-stress promotes in-group assortative sociality: the cases of strong family ties and heightened religiosity. Behavioral and Brain Sciences, 35, 61–79.

    Article  Google Scholar 

  13. Fincher, C. L., Thornhill, R., Murray, D. R., & Schaller, M. (2008). Pathogen prevalence predicts human cross-cultural variability in individualism/collectivism. Proceedings of the Royal Society B, 275, 1279–1285.

    Article  Google Scholar 

  14. Fukuyama, F. (1995). Trust: The social virtues and the creation of prosperity. Chicago: Free Press.

    Google Scholar 

  15. Gelfand, M. J. (2011). Differences between tight and loose cultures: a 33-nation study. Science, 32, 1100–1104.

    Article  Google Scholar 

  16. Giuliano, P., & Alesina, A. (2010). The power of family. Journal of Economic Growth, 15, 93–125.

    Article  Google Scholar 

  17. Greene, J. D., & Paxton, J. M. (2009). Patterns of neural activity associated with honest and dishonest moral decisions. Proceedings of the National Academy of Sciences, 106, 12506–12511.

    Article  Google Scholar 

  18. Greif, A. (1994). Cultural beliefs and the organization of society. The Journal of Political Economy, 102, 912–950.

    Article  Google Scholar 

  19. Heine, S. J., Proulx, T., & Vohs, K. D. (2006). The meaning maintenance model: on the coherence of social motivations. Personality and Social Psychology Review, 10, 88–110.

    Article  Google Scholar 

  20. Henrich, J., Ensminger, J., McElreath, R., Barr, A., Barrett, C., Bolyanatz, A., Cardenas, J. C., Gurven, M., Gwako, E., Henrich, N., Lesorogol, C., Marlowe, F., Tracer, D., & Ziker, J. (2010). Markets, religion, community size, and the evolution of fairness and punishment. Science, 327, 1480–1484.

    Article  Google Scholar 

  21. Hruschka, D. J. (2010). Friendship: Development, ecology and evolution of a relationship. Berkeley: University of California Press.

    Google Scholar 

  22. Hruschka, D. J., & Henrich, J. (2013). Institutions, parasites and the persistence of in-group preferences. PLoS ONE, 8, e63642.

    Article  Google Scholar 

  23. Inglehart, R., & Welzel, C. (2005). Modernization, cultural change, and democracy: The human development sequence. Cambridge: Cambridge University Press.

    Google Scholar 

  24. Jiang, T. (2013). Cheating in mind games: the subtlety of rules matters. Journal of Economic Behavior & Organization, 93, 328–336.

    Article  Google Scholar 

  25. Kaplan, H., Gurven, M., & Hill, K. (2005). A natural history of food sharing and cooperation: a review and a new multi-individual approach to the negotiation of norms. In H. Gintis, S. Bowles, R. Boyd, & E. Fehr (Eds.), Moral sentiments and material interests (pp. 75–113). Cambridge: MIT Press.

    Google Scholar 

  26. Kranton, R. E. (1996). Reciprocal exchange: a self-sustaining system. The American Economic Review, 86, 830–851.

    Google Scholar 

  27. Mathew, S., & Boyd, R. (2011). Punishment sustains large-scale cooperation in prestate warfare. Proceedings of the National Academy of Sciences, 108, 11375–11380.

    Article  Google Scholar 

  28. Mikulincer, M., & Shaver, P. R. (2001). Attachment theory and intergroup bias: evidence that priming the secure base schema attenuates negative reactions to out-groups. Journal of Personality and Social Psychology, 81, 97–115.

    Article  Google Scholar 

  29. Navarrete, C. D., & Fessler, D. M. T. (2005). Normative bias and adaptive challenges: a relational approach to coalitional psychology and a critique of terror management theory. Evolutionary Psychology, 3, 297–325.

    Article  Google Scholar 

  30. Navarrete, C. D., Kurzban, R., Fessler, D. M. T., & Kirkpatrick, L. A. (2004). Anxiety and intergroup bias: terror management or coalitional psychology? Group Processes and Intergroup Relations, 7, 370–379.

    Article  Google Scholar 

  31. Newson, L., & Richerson, P. J. (2009). Why do people become modern? A Darwinian explanation. Population and Development Review, 35, 117–158.

    Article  Google Scholar 

  32. Parsons, T., & Shils, E. (1951). Toward a general theory of action. Cambridge: Harvard University Press.

    Google Scholar 

  33. Richerson, P. J., & Boyd, R. (2001). Institutional evolution in the Holocene: the rise of complex societies. Proceedings of the British Academcy, 110, 197–234.

    Google Scholar 

  34. Schaller, M. (2011). The behavioural immune system and the psychology of human sociality. Philosophical Transactions of the Royal Society B, 366, 3418–3426.

    Article  Google Scholar 

  35. Sugiyama, L. S. (2004). Illness, injury and disability among Shiwiar forager-horticulturalists: implications of health-risk buffering for the evolution of human life history. American Journal of Physical Anthropology, 123, 371–389.

    Article  Google Scholar 

  36. Treisman, D. (2000). The causes of corruption: a cross-national study. Journal of Public Economics, 76, 399–457.

    Article  Google Scholar 

  37. Triandis, H. C. (1995). Individualism and collectivism. Boulder: Westview.

    Google Scholar 

  38. Van de Vliert, E. (2011). Climato-economic origins of variation in ingroup favoritism. Journal of Cross-Cultural Psychology, 42, 494–515.

    Article  Google Scholar 

  39. World Bank. 2011. World Bank indicators. Accessed online at http://data.worldbank.org/indicator.

Download references

Acknowledgments

DJH acknowledges support from the University of Chicago and Templeton Foundation New Science of Virtues Grant as well as support from the National Science Foundation grant BCS-1150813, jointly funded by the Programs in Cultural Anthropology, Social Psychology Program and Decision, Risk, and Management Sciences. JH acknowledges support from the Canadian Institute for Advanced Research (CIFAR). CE acknowledges the support of the Swiss National Science Foundation (Grant no. 100014_130127/1 on the Social Dynamics of Normative Behavior). TJ acknowledges the financial support of the Mozaiek grant from the Netherlands Organization for Scientific Research (NWO) and financial support of the Goldstone Research Fund.

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Correspondence to Daniel Hruschka.

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Hruschka, D., Efferson, C., Jiang, T. et al. Impartial Institutions, Pathogen Stress and the Expanding Social Network. Hum Nat 25, 567–579 (2014). https://doi.org/10.1007/s12110-014-9217-0

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Keywords

  • Institutions
  • Parochialism
  • Insecurity
  • Parasite
  • Pathogen
  • Cross-cultural analysis