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Parasite-stress promotes in-group assortative sociality: The cases of strong family ties and heightened religiosity

Published online by Cambridge University Press:  31 January 2012

Corey L. Fincher  and
Randy Thornhill
Corey L. Fincher
Affiliation:
Department of Biology, University of New Mexico, Albuquerque, NM 87131. fincher@unm.eduhttp://biology.unm.edu/fincher
Randy Thornhill
Affiliation:
Department of Biology, University of New Mexico, Albuquerque, NM 87131rthorn@unm.eduhttp://biology.unm.edu/Thornhill/rthorn.htm
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Abstract

Throughout the world people differ in the magnitude with which they value strong family ties or heightened religiosity. We propose that this cross-cultural variation is a result of a contingent psychological adaptation that facilitates in-group assortative sociality in the face of high levels of parasite-stress while devaluing in-group assortative sociality in areas with low levels of parasite-stress. This is because in-group assortative sociality is more important for the avoidance of infection from novel parasites and for the management of infection in regions with high levels of parasite-stress compared with regions of low infectious disease stress. We examined this hypothesis by testing the predictions that there would be a positive association between parasite-stress and strength of family ties or religiosity. We conducted this study by comparing among nations and among states in the United States of America. We found for both the international and the interstate analyses that in-group assortative sociality was positively associated with parasite-stress. This was true when controlling for potentially confounding factors such as human freedom and economic development. The findings support the parasite-stress theory of sociality, that is, the proposal that parasite-stress is central to the evolution of social life in humans and other animals.

Keywords

assortative socialitycollectivismfamily tiesHomo sapiensindividualisminfectious diseaseparasitesreligionreligiositysociality
Type
Target Article
Information
Behavioral and Brain Sciences , Volume 35 , Issue 2 , April 2012 , pp. 61 - 79
Copyright
Copyright © Cambridge University Press 2012

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References

Alesina, A. & Giuliano, P. (2007) The power of the family. Discussion paper, No. 2132. Harvard Institute of Economic Research, Harvard University. Available at: http://post.economics.harvard.edu/hier/2007papers/2007list.html.Google Scholar
Alexander, R. D. (1979) Darwinism and human affairs. University of Washington Press.Google Scholar
Altizer, S., Nunn, C. L., Thrall, P. H., Gittleman, J. L., Antonovics, J., Cunningham, A. A., Dobson, A. P., Ezenwa, V., Jones, K. E., Pedersen, A. B., Poss, M. & Pulliam, J. R. C. (2003) Social organization and parasite risk in mammals: Integrating theory and empirical studies. Annual Review of Ecology Evolution and Systematics 34:517–47.CrossRefGoogle Scholar
Anderson, R. M. & May, R. M. (1991) Infectious disease of humans: Dynamics and control. Oxford University Press.CrossRefGoogle Scholar
Andersson, M. (1984) The evolution of eusociality. Annual Review of Ecology and Systematics 15:165–89.CrossRefGoogle Scholar
Andrews, P. W., Gangestad, S. W. & Matthews, D. (2002) Adaptationism – how to carry out an exaptationist program. Behavioral and Brain Sciences 25:489–504.CrossRefGoogle ScholarPubMed
Arnold, K. E. & Owens, I. P. F. (1998) Cooperative breeding in birds: A comparative test of the life history hypothesis. Proceedings of the Royal Society of London, B: Biological Sciences 265:739–45.CrossRefGoogle Scholar
Azzi, C. & Ehrenberg, R. (1975) Household allocation of time and church attendance. Journal of Political Economy 83:27–56.CrossRefGoogle Scholar
Barnea, M. F. & Schwartz, S. H. (1998) Values and voting. Political Psychology 19:17–40.CrossRefGoogle Scholar
Barrett, D. B., Kurian, G. T. & Johnson, T. M., ed. (2001) World Christian encyclopedia: A comparative survey of churches and religions in the modern world, vol. 1: The world by countries: Religionists, churches, ministries, 2nd edition. Oxford University Press.Google Scholar
Billing, J. & Sherman, P. W. (1998) Antimicrobial functions of spices: Why some like it hot. Quarterly Review of Biology 73:3–49.Google Scholar
Blumstein, D. T. & Møller, A. P. (2008) Is sociality associated with high longevity in North American birds? Biology Letters 4:146–48.CrossRefGoogle ScholarPubMed
Boyd, R. & Richerson, P. J. (1985) Culture and the evolutionary process. The University of Chicago Press.Google Scholar
Boyer, P. (2001) Religion explained: The evolutionary origins of religious thought. Basic Books.Google Scholar
Brewer, M. B. (1999) The psychology of prejudice: Ingroup love or outgroup hate? Journal of Social Issues 55:429–44.CrossRefGoogle Scholar
Brockmann, H. J. (1984) The evolution of social behaviour in insects. In: Behavioural ecology: An evolutionary approach, ed. Krebs, J. R. & Davies, N. B., pp. 340–61. Sinauer Associates.Google Scholar
Brown, J. L. (1987) Helping and communal breeding in birds: Ecology and evolution. Princeton University Press.CrossRefGoogle Scholar
Bulbulia, J. (2004a) Religious costs as adaptations that signal altruistic intention. Evolution and Cognition 10:19–42.Google Scholar
Bulbulia, J. (2004b) The cognitive and evolutionary psychology of religion. Biology and Philosophy 19:655–86.CrossRefGoogle Scholar
Bulbulia, J. & Mahoney, A. (2008) Religious solidarity: The hand grenade experiment. Journal of Cognition and Culture 8:295–320.CrossRefGoogle Scholar
Cashdan, E. (2001a) Ethnic diversity and its environmental determinants: Effects of climate, pathogens, and habitat diversity. American Anthropologist 103:968–91.CrossRefGoogle Scholar
Cashdan, E. (2001b) Ethnocentrism and xenophobia: A cross-cultural study. Current Anthropology 42(5):760–65.CrossRefGoogle Scholar
Cavalli-Sforza, L. & Feldman, M. (1981) Cultural transmission and evolution: A quantitative approach. Princeton University Press.Google Scholar
Charnov, E. L. (1993) Life history invariants: Some explanations of symmetry in evolutionary ecology. Oxford University Press.CrossRefGoogle Scholar
Chaves, M. & Gorski, P. S. (2001) Religious pluralism and religious participation. Annual Review of Sociology 27:261–81.Google Scholar
Chiao, J. Y. & Blizinsky, K. D. (2010) Culture-gene coevolution of individualism-collectivism and the serotonin transporter gene. Proceedings of the Royal Society of London, B: Biological Sciences 277:529–37.Google ScholarPubMed
Corby-Harris, V. & Promislow, D. E. L. (2008) Host ecology shapes geographical variation for resistance to bacterial infection in Drosophila melanogaster . Journal of Animal Ecology 77(4):768–76.CrossRefGoogle ScholarPubMed
Crawford, D. H. (2007) Deadly companions: How microbes shaped our history. Oxford University Press.Google Scholar
Cronk, L. (1994) Evolutionary-theories of morality and the manipulative use of signals. Zygon 29:81–101.CrossRefGoogle Scholar
Curtis, V. A. (2007) Dirt, disgust and disease: A natural history of hygiene. Journal of Epidemiology and Community Health 61:660–64.CrossRefGoogle ScholarPubMed
Curtis, V. A., Aunger, R. & Rabie, T. (2004) Evidence that disgust evolved to protect from risk of disease. Proceedings of the Royal Society, B (Supplement) 271:17–31.Google ScholarPubMed
Delamontagne, R. (2010) High religiosity and societal dysfunction in the United States during the first decade of the twenty-first century. Evolutionary Psychology 8:617–57. Available at: www.epjournal.net/filestore/EP08617657_c.pdf.CrossRefGoogle ScholarPubMed
Denic, S., Nagelkerke, N. & Agarwal, M. M. (2008a) Consanguineous marriages and endemic malaria: Can inbreeding increase population fitness? Malaria Journal 7:150.CrossRefGoogle ScholarPubMed
Denic, S., Nagelkerke, N. & Agarwal, M. M. (2008b) Consanguineous marriages: Do genetic benefits outweigh its costs in populations with alpha(+)-thalassemia, hemoglobin s, and malaria? Evolution and Human Behavior 29:364–69.Google Scholar
Denic, S. & Nicholls, M. G. (2007) Genetic benefits of consanguinity through selection of genotypes protective against malaria. Human Biology 79:145–158.CrossRefGoogle ScholarPubMed
Diamond, J. (1998) Guns, germs, and steel: The fates of human societies. W.W. Norton.Google Scholar
Dionne, M., Miller, K. M., Dodson, J. J., Caron, F. & Bernatchez, L. (2007) Clinical variation in MHC diversity with temperature: Evidence for the role of host-pathogen interaction on local adaptation in Atlantic salmon. Evolution 61:2154–64.Google Scholar
Dobson, A. P. & Carper, E. R. (1996) Infectious diseases and human population history: throughout history the establishment of disease has been a side effect of the growth of civilization. Bioscience 46:115–26.CrossRefGoogle Scholar
Dubos, R. (1980) The evolution of microbial diseases. In: Man adapting, ed. Dubos, R., pp. 163–95. Yale University Press.Google Scholar
Dunn, R. R., Davies, T. J., Harris, N. C. & Gavin, M. C. (2010) Global drivers of human pathogen richness and prevalence. Proceedings of the Royal Society, B 277:2587–95.Google Scholar
Ekman, J. (2006) Family living among birds. Journal of Avian Biology 37:289–98.CrossRefGoogle Scholar
Emlen, S. T. (1994) Benefits, constraints and the evolution of the family. Trends in Ecology and Evolution 9:282–85.CrossRefGoogle ScholarPubMed
Emlen, S. T. (1995) An evolutionary-theory of the family. Proceedings of the National Academy of Sciences USA 92:8092–99.CrossRefGoogle ScholarPubMed
Emlen, S. T. (1997) The evolutionary study of human family systems. Social Science (Information Sur Les Sciences Sociales) 36:563–89.Google Scholar
Ewald, P. W. (1994) Evolution of infectious disease. Oxford University Press.CrossRefGoogle Scholar
Faulkner, J., Schaller, M., Park, J. H. & Duncan, L. A. (2004) Evolved disease-avoidance mechanisms and contemporary xenophobic attitudes. Group Processes and Intergroup Relations 7:333–53.CrossRefGoogle Scholar
Figueredo, A. J. & Wolf, P. S. A. (2009) Assortative pairing and life history strategy: A cross-cultural study. Human Nature 20:317–330.CrossRefGoogle Scholar
Fincher, C. L. & Thornhill, R. (2008a) A parasite-driven wedge: Infectious diseases may explain language and other biodiversity. Oikos 117:1289–97.CrossRefGoogle Scholar
Fincher, C. L. & Thornhill, R. (2008b) Assortative sociality, limited dispersal: Infectious disease and the genesis of the global patterns of religious diversity. Proceedings of the Royal Society of London, B: Biological Sciences 275:2587–94.Google Scholar
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 275:1279–85.CrossRefGoogle ScholarPubMed
Finke, R. & Scheitle, C. P. (2005) Accounting for the uncounted: Computing correctives for the 2000 RCMS data. Review of Religious Research 47:5–22.CrossRefGoogle Scholar
Finke, R. & Stark, R. (1988) Religious economies and sacred canopies: Religious mobilization in American cities, 1906. American Sociological Review 53:41–49.CrossRefGoogle Scholar
Finkel, D. N., Swartwout, P. & Sosis, R. (2009) The socio-religious brain: A developmental model. Proceedings of the British Academy 158:287–312.Google Scholar
Flinn, M. V. (1997) Culture and the evolution of social learning. Evolution and Human Behavior 18:23–67.CrossRefGoogle Scholar
Flinn, M. V. & Coe, K. (2007) The linked red queens of human cognition, reciprocity, and culture. In: The evolution of mind, ed. Gangestad, S. W. & Simpson, J. A., pp. 339–47. Guilford Press.Google Scholar
Floate, K. D., Kearsley, M. J. C. & Whitham, T. G. (1993) Elevated herbivory in plant hybrid zones – Chrysomela confluens, Populus, and phenological sinks. Ecology 74:2056–65.CrossRefGoogle Scholar
Freeland, W. J. (1976) Pathogens and the evolution of primate sociality. Biotropica 8:12–24.CrossRefGoogle Scholar
Freeland, W. J. (1979) Primate social-groups as biological islands. Ecology 60:719–28.CrossRefGoogle Scholar
Gangestad, S. W., Haselton, M. G. & Buss, D. M. (2006a) Evolutionary foundations of cultural variation: Evoked culture and mate preferences. Psychological Inquiry 17:75–95.CrossRefGoogle Scholar
Gangestad, S. W., Haselton, M. G. & Buss, D. M. (2006b) Toward an integrative understanding of evoked and transmitted culture: The importance of specialized psychological design. Psychological Inquiry 17:138–51.CrossRefGoogle Scholar
Gelfand, M. J., Bhawuk, D. P. S., Nishii, L. H. & Bechtold, D. J. (2004) Individualism and collectivism. In: Culture, leadership, and organizations: The GLOBE study of 62 societies, ed. House, R. J., Hanges, P. J., Javidan, M., Dorfman, P. W. & Gupta, V., pp. 437–512. Sage.Google Scholar
Georgas, J., Mylonas, K., Bafiti, T., Poortinga, Y. H., Christakopoulou, S., Kagitcibasi, C., Kwak, K., Ataca, B., Berry, J., Orung, S., Sunar, D., Charalambous, N., Goodwin, R., Wang, W. Z., Angleitner, A., Stepanikova, I., Pick, S., Givaudan, M., Zhuravliova-Gionis, I., Konantambigi, R., Gelfand, M. J., Marinova, V., Mcbride-Chang, C. & Kodic, Y. (2001) Functional relationships in the nuclear and extended family: A 16-culture study. International Journal of Psychology 36:289–300.CrossRefGoogle Scholar
George, L. K., Ellison, C. G. & Larson, D. B. (2002) Explaining the relationships between religious involvement and health. Psychological Inquiry 13:190–200.Google Scholar
Gladden, P. R., Welch, J., Figueredo, A. J. & Jacobs, W. J. (2009) Moral intuitions and religiosity as spuriously correlated life history traits. Journal of Evolutionary Psychology 7(2):167–84.Google Scholar
Good, C. M. (1972) Salt, trade, and disease – aspects of development in Africa's northern Great Lakes region. International Journal of African Historical Studies 5:543–86.CrossRefGoogle Scholar
Grim, B. J. & Finke, R. (2006) International religion indexes: Government regulation, government favoritism, and social regulation of religion. Interdisciplinary Journal of Research on Religion 2:1–40.Google ScholarPubMed
Guégan, J.-F. & Constantin De Magny, G. (2007) Epidemiology in a changing world: The need for a bigger picture! In: Encyclopedia of infectious diseases: Modern methodologies, ed. Tibayrenc, M., pp. 569–89. John Wiley.CrossRefGoogle Scholar
Guernier, V., Hochberg, M. F. & Guégan, J.-F. (2004) Ecology drives the worldwide distribution of human diseases. PLoS Biology 2:740–46.Google Scholar
Gurven, M., Allen-Arave, W., Hill, K. & Hurtado, M. (2000) ‘It's a wonderful life’: Signaling generosity among the Ache of Paraguay. Evolution and Human Behavior 21:263–82.CrossRefGoogle ScholarPubMed
Haldane, J. B. S. (1949) Disease and evolution. La Ricerca Scientifica Supplemento A 19:68–76.Google Scholar
Hamilton, W. D. (1964) The genetical evolution of social behavior I-II. Journal of Theoretical Biology 7:1–52.Google Scholar
Hamilton, W. D. & Zuk, M. (1982) Heritable true fitness and bright birds: A role for parasites? Science 218:384–87.CrossRefGoogle Scholar
Henrich, J. (2009) The evolution of costly displays, cooperation and religion: Credibility enhancing displays and their implications for cultural evolution. Evolution and Human Behavior 30:244–60.CrossRefGoogle Scholar
Henrich, J. & Henrich, N. (2010) The evolution of cultural adaptations: Fijian food taboos protect against dangerous marine toxins. Proceedings of the Royal Society, B 277:3715–24.CrossRefGoogle ScholarPubMed
Hill, K. & Hurtado, A. M. (2009) Cooperative breeding in South American hunter-gatherers. Proceedings of the Royal Society, B 276:3863–70.Google Scholar
Hoben, A. D., Buunk, A. P., Fincher, C. L., Thornhill, R. & Schaller, M. (2010) On the adaptive origins and maladaptive consequences of human inbreeding: Pathogen prevalence, immune functioning, and consanguineous marriage. Evolutionary Psychology 8:658–76.CrossRefGoogle ScholarPubMed
Hofstede, G. (2001) Culture's consequences: Comparing values, behaviors, institutions and organizations across nations, 2nd edition. Sage.Google Scholar
House, R. J., Hanges, P. J., Javidan, M., Dorfman, P. W. & Gupta, V., eds, (2004) Culture, leadership, and organizations: The GLOBE study of 62 societies. Sage.Google Scholar
Iannaccone, L. R. (1990) Religious practice, a human-capital approach. Journal for the Scientific Study of Religion 29:297–314.CrossRefGoogle Scholar
Iannaccone, L. R. (1994) Why strict churches are strong. American Journal of Sociology 99:1180–211.Google Scholar
Inglehart, R. & Baker, W. E. (2000) Modernization, cultural change, and the persistence of traditional values. American Sociological Review 65:19–51.CrossRefGoogle Scholar
Irons, W. (1996) In our own self image: The evolution of morality, deception, and religion. Skeptic 4:50–61.Google Scholar
Irons, W. (2001) Religion as a hard-to-fake sign of commitment. In: Evolution and the capacity for commitment, ed. Nesse, R. M., pp. 292–309. Russell Sage Foundation.Google Scholar
Irons, W. (2008) Why people believe (what other people see as) crazy ideas. In: The evolution of religion: Studies, theories, and critiques, ed. Bulbulia, J., Sosis, R., Genet, C., Genet, R. & Wyman, K., pp. 51–57. Collins Foundation Press.Google Scholar
Jackson, L. M. & Hunsberger, B. (1999) An intergroup perspective on religion and prejudice. Journal for the Scientific Study of Religion 38:509–523.CrossRefGoogle Scholar
Jenkins, C., Dimitrakakis, M., Cook, I., Sanders, R. & Stallman, N. (1989) Culture change and epidemiological patterns among the Hagahai, Papua New Guinea. Human Ecology 17:27–57.CrossRefGoogle Scholar
Johnson, D. (2008) Gods of war: The adaptive logic of religious conflict. In: The evolution of religion: Studies, theories, and critiques, ed. Bulbulia, J., Sosis, R., Genet, C., Genet, R., Harris, E. & Wyman, K., pp. 111–17. Collins Foundation Press.Google Scholar
Jost, J. T., Federico, C. M. & Napier, J. L. (2009) Political ideology: Its structure, functions, and elective affinities. Annual Review of Psychology 60:307–37.Google Scholar
Kaltz, O., Gandon, S., Michalakis, Y. & Shykoff, J. A. (1999) Local maladaptation in the anther-smut fungus Microbotryum violaceum to its host plant Silene latifolia: Evidence from a cross-inoculation experiment. Evolution 53(2):395–407.Google Scholar
Kaplan, H. S. & Gangestad, S. W. (2005) Life history theory and evolutionary psychology. In: The handbook of evolutionary psychology, ed. Buss, D. M., pp. 68–95. John Wiley.Google Scholar
Kashima, Y. & Kashima, E. S. (2003) Individualism, GNP, climate, and pronoun drop – Is individualism determined by affluence and climate, or does language use play a role? Journal of Cross-Cultural Psychology 34:125–34.CrossRefGoogle Scholar
Kitayama, S., Ishii, K., Imada, T., Takemura, K. & Ramaswamy, J. (2006) Voluntary settlement and the spirit of independence: Evidence from Japan's ‘northern frontier’. Journal of Personality and Social Psychology 91:369–84.CrossRefGoogle ScholarPubMed
Koenig, H. G. (1997) Is religion good for your health? Effects of religion on mental and physical health. Haworth Press.Google Scholar
Kokko, H. & Ots, I. (2006) When not to avoid inbreeding. Evolution 60:467–75.Google Scholar
Kosmin, B. A., Mayer, E. & Keysar, A. (2001) American Religious Identification Survey 2001, pp. 1–46. The Graduate Center of the City University of New York Google Scholar
Letendre, K., Fincher, C. L. & Thornhill, R. (2010) Does infectious disease cause global variation in the frequency of intrastate armed conflict and civil war? Biological Reviewes 85:669–83.CrossRefGoogle ScholarPubMed
Lewis, K. (1998) Pathogen resistance as the origin of kin altruism. Journal of Theoretical Biology 193:359–63.Google Scholar
Loehle, C. (1995) Social barriers to pathogen transmission in wild animal populations. Ecology 76:326–35.CrossRefGoogle Scholar
Lopez, A. D., Mathers, C. D., Ezzati, M., Jamison, D. T. & Murray, C. J. L. (2006) Global and regional burden of disease and risk factors, 2001: Systematic analysis of population health data. Lancet 367:1747–57.CrossRefGoogle ScholarPubMed
Low, B. S. (1990) Marriage systems and pathogen stress in human societies. American Zoologist 30:325–39.Google Scholar
Lumsden, C. J. & Wilson, E. O. (1981) Genes, mind and culture: The coevolutionary process. Harvard University Press.Google Scholar
Lynn, R., Harvey, J. & Nyborg, H. (2009) Average intelligence predicts atheism rates across 137 nations. Intelligence 37:11–15.Google Scholar
Mattausch, J. (in press) With whom may British Gujaratis identify, to whom may be compared? In: Global Gujaratis, ed. Mawani, S. & Mukadam, A.. Brill.Google Scholar
McCleary, R. M. & Barro, R. J. (2006) Religion and political economy in an international panel. Journal for the Scientific Study of Religion 45:149–75.CrossRefGoogle Scholar
McElreath, R., Boyd, R. & Richerson, P. J. (2003) Shared norms and the evolution of ethnic markers. Current Anthropology 44:122–29.Google Scholar
McNeill, W. H. (1980) Migration patterns and infection in traditional societies. In: Changing disease patterns and human behavior, ed. Stanley, N. F. & Joske, R. A., pp. 27–36. Academic Press.Google Scholar
McNeill, W. H. (1998) Plagues and peoples. Anchor.Google Scholar
Miller, E. N., Fadl, M., Mohamed, H. S., Elzein, A., Jamieson, S. E., Cordell, H. J., Peacock, C. S., Fakiola, M., Madhuri, R., Eltahir, A. K., Elhassan, A., Musa, M. M., Muntaser, E. I. & Blackwell, J. M. (2007) Y chromosome lineage- and village-specific genes on chromosomes 1p22 and 6q27 control visceral leishmaniasis in Sudan. PLoS Genetics 3(5):679–88. e71.Google Scholar
Mortensen, C. R., Becker, D. V., Ackerman, J. M., Neuberg, S. L. & Kenrick, D. T. (2010) Infection breeds reticence: the effects of disease salience on self-perceptions of personality and behavioral avoidance tendencies. Psychological Science 21:440–47.Google Scholar
Murdock, G. P. (1949) Social structure. MacMillan.Google Scholar
Murray, D. R. & Schaller, M. (2010) Historical prevalence of infectious diseases within 230 geopolitical regions: A tool for investigating origins of culture. Journal of Cross-Cultural Psychology 41:99–108.Google Scholar
Murray, D. R., Trudeau, R. & Schaller, M. (2011) On the origins of cultural differences in conformity: Four tests of the pathogen prevalence hypothesis. Personality and Social Psychology Bulletin 37:318–29.CrossRefGoogle ScholarPubMed
Navarrete, C. D. & Fessler, D. M. T. (2006) Disease avoidance and ethnocentrism: The effects of disease vulnerability and disgust sensitivity on intergroup attitudes. Evolution and Human Behavior 27:270–82.CrossRefGoogle Scholar
Nettle, D. (1999) Linguistic diversity. Oxford University Press.CrossRefGoogle ScholarPubMed
Newson, L., Postmes, T., Lea, S. E. G. & Webley, P. (2005) Why are modern families small? Toward an evolutionary and cultural explanation for the demographic transition. Personality and Social Psychology Review 9:360–75.Google Scholar
Norenzayan, A. & Shariff, A. F. (2008) The origin and evolution of religious prosociality. Science 322:58–62.CrossRefGoogle ScholarPubMed
Norris, P. & Inglehart, R. (2004) Sacred and secular. Cambridge University Press.CrossRefGoogle Scholar
Oaten, M., Stevenson, R. J. & Case, T. I. (2009) Disgust as a disease-avoidance mechanism. Psychological Bulletin 135:303–21.Google Scholar
Oishi, S., Schimmack, U., Diener, E. & Suh, E. M. (1998) The measurement of values and individualism-collectivism. Personality and Social Psychology Bulletin 24:1177–89.Google Scholar
Oliveira, R. F., Taborsky, M. & Brockmann, H. J. (2008) Alternative reproductive tactics: An integrative approach. Cambridge University Press.Google Scholar
Park, J. H., Faulkner, J. & Schaller, M. (2003) Evolved disease-avoidance processes and contemporary anti-social behavior: Prejudicial attitudes and avoidance of people with physical disabilities. Journal of Nonverbal Behavior 27:65–87.CrossRefGoogle Scholar
Park, J. H. & Schaller, M. (2005) Does attitude similarity serve as a heuristic cue for kinship? Evidence of an implicit cognitive association. Evolution and Human Behavior 26:158–70.Google Scholar
Park, J. H., Schaller, M. & Crandall, C. S. (2007) Pathogen-avoidance mechanisms and the stigmatization of obese people. Evolution and Human Behavior 28:410–14.CrossRefGoogle Scholar
Pitchappan, R. M. (2002) Castes, migration, immunogenetics and infectious diseases in south India. Community Genetics 5:157–61.Google Scholar
Price-Smith, A. T. (2002) The health of nations: Infectious disease, environmental change, and their effects on national security and development. MIT Press.Google Scholar
Prokop, P., Usak, M. & Fancovicová, J. (2010a) Health and the avoidance of macroparasites: A preliminary cross-cultural study. Journal of Ethology 28:345–51.CrossRefGoogle Scholar
Prokop, P., Usak, M. & Fancovicová, J. (2010b) Risk of parasite transmission influences perceived vulnerability to disease and perceived danger of disease-relevant animals. Behavioural Processes 85:52–7Google Scholar
Prugnolle, F., Manica, A., Charpentier, M., Guégan, J.-F., Guernier, V. & Balloux, F. (2005) Pathogen-driven selection and worldwide HLA class I diversity. Current Biology 15:1022–27.Google Scholar
Quinlan, R. J. (2007) Human parental effort and environmental risk. Proceedings of the Royal Society, B 274:121–25.Google Scholar
Rees, T. (2009) Is personal insecurity a cause of cross-national differences in the intensity of religious belief? Journal of Religion and Society 11. Available at: moses.creighton.edu/JRS/2009/2009-17.html.Google Scholar
Ridley, M. (1993) The red queen: Sex and the evolution of human nature. Macmillan.Google Scholar
Rossano, M. J. (2007) Supernaturalizing social life: Religion and the evolution of human cooperation. Human Nature 18:272–94.CrossRefGoogle ScholarPubMed
Rougeron, V., De Meeus, T., Hide, M., Waleckx, E., Bermudez, H., Arevalo, J., Llanos-Cuentas, A., Dujardin, J. C., De Doncker, S., Le Ray, D., Ayala, F. J. & Banuls, A. L. (2009) Extreme inbreeding in Leishmania braziliensis . Proceedings of the National Academy of Sciences USA 106(25):10224–29.CrossRefGoogle ScholarPubMed
Sage, R. D., Heyneman, D., Lim, K. C. & Wilson, A. C. (1986) Wormy mice in a hybrid zone. Nature 324:60–63.Google Scholar
Sagiv, L. & Schwartz, S. H. (1995) Value priorities and readiness for out-group social contact. Journal of Personality and Social Psychology 69:437–48.CrossRefGoogle Scholar
Saroglou, V., Delpierre, V. & Dernelle, R. (2004) Values and religiosity: A meta-analysis of studies using Schwartz's model. Personality and Individual Differences 37:721–34.CrossRefGoogle Scholar
Schaller, M. (2006) Parasites, behavioral defenses, and the social psychological mechanisms through which cultures are evoked. Psychological Inquiry 17:96–101.Google Scholar
Schaller, M. & Duncan, L. A. (2007) The behavioral immune system: Its evolution and social psychological implications. In: Evolution and the social mind: Evolutionary psychology and social cognition, ed. Forges, J. P., Haselton, M. G. & Von Hippel, W., pp. 293–307. Psychology Press.Google Scholar
Schaller, M. C., Miller, G. E., Gervais, W. M., Yager, S. & Chen, E. (2010) Mere visual perception of other people's disease symptoms facilitates a more aggressive immune response. Psychological Science 21:649–52.Google Scholar
Schaller, M. & Murray, D. R. (2008) Pathogens, personality, and culture: Disease prevalence predicts worldwide variability in sociosexuality, extraversion, and openness to experience. Journal of Personality and Social Psychology 95:212–21.CrossRefGoogle ScholarPubMed
Schaller, M. & Neuberg, S. L. (2008) Intergroup prejudices and intergroup conflicts. In: Foundations of evolutionary psychology, ed. Crawford, C. & Krebs, D. L., pp. 399–412. Erlbaum.Google Scholar
Schwartz, S. H. (1992) Universals in the content and structures of values: Theoretical advances and empirical tests in 20 countries. Advances in Experimental Social Psychology 25:1–65.Google Scholar
Schwartz, S. H. (2004) Mapping and interpreting cultural differences around the world. In: Comparing cultures: Dimensions of culture in a comparative perspective, ed. Vinkin, H., Soeters, J. & Ester, P., pp. 43–73. Brill.Google Scholar
Searcy, W. A. & Nowicki, S. (2005) The evolution of animal communication: Reliability and deception in signaling systems. Princeton University Press.Google Scholar
Sherman, P. W., Lacey, E. A., Reeve, H. K. & Keller, L. (1995) The eusociality continuum. Behavioral Ecology 6:102–108.Google Scholar
Shields, W. M. (1982) Philopatry, inbreeding, and the evolution of sex. State University of New York Press.Google Scholar
Siegal, M. (1988) Children's knowledge of contagion and contamination as causes of illness. Child Development 59:1353–59.CrossRefGoogle ScholarPubMed
Smith, K. F., Sax, D. F., Gaines, S. D., Guernier, V. & Guégan, J.-F. (2007) Globalization of human infectious disease. Ecology 88:1903–10.Google Scholar
Sosis, R. (2000) Religion and intragroup cooperation: Preliminary results of a comparative analysis of utopian communities. Cross-Cultural Research 34:70–87.Google Scholar
Sosis, R. (2003) Why aren't we all Hutterities? Costly signaling theory and religious behavior. Human Nature – An Interdisciplinary Biosocial Perspective 14:91–127.Google Scholar
Sosis, R. (2005) Does religion promote trust? The role of signaling, reputation, and punishment. Interdisciplinary Journal of Research on Religion 1:1–30.Google Scholar
Sosis, R. & Alcorta, C. (2003) Signaling, solidarity, and the sacred: The evolution of religious behavior. Evolutionary Anthropology 12:264–74.Google Scholar
Sosis, R. & Bressler, E. R. (2003) Cooperation and commune longevity: A test of the costly signaling theory of religion. Cross-Cultural Research 37:211–39.Google Scholar
Sosis, R., Kress, H. & Boster, J. S. (2007) Scars for war: Evaluating alternative signaling explanations for cross-cultural variance in ritual costs. Evolution and Human Behavior 28:234–47.Google Scholar
Sosis, R. & Ruffle, B. J. (2003) Religious ritual and cooperation: Testing for a relationship on Israeli religious and secular kibbutzim. Current Anthropology 44:713–22.CrossRefGoogle Scholar
Steadman, L. B. & Palmer, C. T. (2008) The supernatural and natural selection: The evolution of religion. Paradigm.Google Scholar
Stevenson, R. J., Case, T. I. & Oaten, M. J. (2009) Frequency and recency of infection and their relationship with disgust and contamination sensitivity. Evolution and Human Behavior 30:363–68.Google Scholar
Sugiyama, L. S. (2004) Illness, injury, and disability among Shiwiar forager-horticulturists: Implications of health-risk buffering for the evolution of human life history. American Journal of Physical Anthropology 123:371–89.Google Scholar
Sugiyama, L. S. & Sugiyama, M. S. (2003) Social roles, prestige, and health risk: Social niche specialization as a risk-buffering strategy. Human Nature 14:165–90.Google Scholar
Thompson, J. N. (2005) The geographic mosaic of coevolution. University of Chicago Press.Google Scholar
Thornhill, R. (1990) The study of adaptation. In: Interpretation and explanation in the study of animal behavior, vol. 2: Explanation, evolution, and adaptation, ed. Bekoff, M. & Jamieson, D., pp. 31–62. Westview Press.Google Scholar
Thornhill, R. & Fincher, C. L. (2007) What is the relevance of attachment and life history to political values? Evolution and Human Behavior 28:215–22.Google Scholar
Thornhill, R., Fincher, C. L. & Aran, D. (2009) Parasites, democratization, and the liberalization of values across contemporary countries. Biological Reviews 84:113–31.Google Scholar
Thornhill, R., Fincher, C. L., Murray, D. R. & Schaller, M. (2010) Zoonotic and non-zoonotic diseases in relation to human personality and societal values: Support for the parasite-stress model. Evolutionary Psychology 8:151–69.Google Scholar
Tibayrenc, M. (2007) Human genetic diversity and the spread of infectious diseases. In: Encyclopedia of infectious diseases – modern methodologies, ed. Tibayrenc, M., pp. 321–35. John Wiley.CrossRefGoogle Scholar
Tinsley, M. C., Blanford, S. & Jiggins, F. M. (2006) Genetic variation in Drosophila melanogaster pathogen susceptibility. Parasitology 132:767–73.CrossRefGoogle ScholarPubMed
Tooby, J. (1982) Pathogens, polymorphism, and the evolution of sex. Journal of Theoretical Biology 97:557–76.CrossRefGoogle ScholarPubMed
Triandis, H. C. (1995) Individualism and collectivism (new directions in social psychology). Westview Press.Google Scholar
Van Valen, L. (1973) A new evolutionary law. Evolutionary Theory 1:1–30.Google Scholar
Vandello, J. A. & Cohen, D. (1999) Patterns of individualism and collectivism across the United States. Journal of Personality and Social Psychology 77:279–92.CrossRefGoogle Scholar
Vanhanen, T. (2003) Democratization: A comparative analysis of 170 countries. Routledge.Google Scholar
Vigil, J. M. (2009) A socio-relational framework of sex differences in the expression of emotion. Behavioral and Brain Sciences 32:375–428.Google Scholar
West-Eberhard, M. J. (2003) Developmental plasticity and evolution. Oxford University Press.CrossRefGoogle Scholar
Widman, D. R., Corcoran, K. E. & Nagy, R. E. (2009) Belonging to the same religion enhances the opinion of others' kindness and morality. Journal of Social, Evolutionary, and Cultural Psychology 3:281–89.CrossRefGoogle Scholar
Williams, G. C. (1966) Adaptation and natural selection. Princeton University Press.Google Scholar
Wilson, D. S. (2002) Darwin's cathedral: Evolution, religion, and the nature of society. The University of Chicago Press.Google Scholar
Wilson, E. O. (1971) The insect societies. The Belknap Press of Harvard University Press.Google Scholar
Wolfe, N. D., Dunavan, C. P. & Diamond, J. (2007) Origins of major human infectious diseases. Nature 447:279–83.Google Scholar
World Health Organization (2004) Mortality and burden of disease estimates for WHO member states in 2002. Electronic file available at: http://www.who.int/healthinfo/bod/en/index.html.Google Scholar
Zuckerman, P. (2007) Atheism – contemporary numbers and patterns. In: The Cambridge companion to atheism, ed. Martin, M., pp. 47–65. Cambridge University Press.Google Scholar
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