Economics, Values, and Cognitive Ability
Abstract
The parasite‐stress hypothesis of economics proposes that variation in infectious disease across regions causes variation in economic productivity by three proximate causes. (1) Infectious diseases cause morbidity, reducing people’s capability to produce. (2) Parasite stress evokes people’s values, which, in turn, cause regional economic parameters. For example, as parasite stress increases, regions become increasingly collectivistic. Collectivism causes parochial economics, political corruption, autocratic governance, and reduced innovativeness and diffusion of innovations. These effects stifle economic productivity of a region. In contrast, individualism causes willingness to transact with a diversity of people, creating broad economies and interregional sharing of ideas and products, increased innovativeness, governmental transparency, and democracy. These effects promote economic prosperity and equality. (3) Infectious disease limits cognitive ability, which reduces innovativeness and thus economic well-being in a region. Evidence supporting this framework is both diverse and copious. We discuss the established negative relationships between two important economic indicators, GDP per capita and Gini, and parasite stress and collectivism across the countries of the world. Studies also have confirmed the negative relationship between the diffusion of various innovations and parasite stress and collectivism across countries and US states. Evidence shows that even the routine purchases of people at supermarkets are consistent with the parasite-stress theory of values. We also discuss research indicating that parasite-stress variation across the globe affected wealth of regions as far back as 1500 ad. Cognitive ability is correlated negatively with parasite stress and collectivism both across countries and US states.
Keywords
Gross Domestic Product Cognitive Ability Intelligence Quotient Technology Adoption Economic ProsperityReferences
- Alexander, R. D. (1989). Evolution of the human psyche. In The Human Revolution (eds. P. Mellars & C. Stringer), pp. 455–513. University of Edinburgh Press, Edinburgh, U.K.Google Scholar
- Ball, R. (2001). Individualism, collectivism, and economic development. Annals of the American Academy of Political and Social Science 573: 57–84.CrossRefGoogle Scholar
- Barber, N. (2005). Educational and ecological correlates of IQ: A cross-national investigation. Intelligence 33: 273–284.CrossRefGoogle Scholar
- Barro, R. J., & Lee, J. W. (2001). International data on educational attainment: Updates and Implications. Oxford Economic Papers 53: 541–563.CrossRefGoogle Scholar
- Bates, T. C. (2007). Fluctuating asymmetry and intelligence. Intelligence 35: 41–46.CrossRefGoogle Scholar
- Berwick, D. M. (2003). Disseminating innovations in health care. JAMA 289: 1969–1975.PubMedCrossRefGoogle Scholar
- Bleakley, H. (2007). Disease and development: Evidence from hookworm eradication in the American South. The Quarterly Journal of Economics 122: 73–117.PubMedCentralPubMedCrossRefGoogle Scholar
- Bonds, M. H., Keenan, D. C., Rohani, P. et al. (2010). Poverty trap formed by the ecology of infectious diseases. Proceedings of the Royal Society B Biological Sciences 277: 1185–1192.PubMedCentralCrossRefGoogle Scholar
- Bonds, M. H., Dobson, A. P., & Keenan, D. C. (2012). Disease ecology, biodiversity, and the latitudinal gradient in income. PLoS Biology 10: e1001456.PubMedCentralPubMedCrossRefGoogle Scholar
- Borsboom, D., & Dolan, C. V. (2006). Why g is not an adaptation: A comment on Kanazawa (2004). Psychological Review 113: 433–437.PubMedCrossRefGoogle Scholar
- Brown, J. H., Burnside, W. R., Davidson, A. D. et al. (2011). Energetic limits to economic growth. Bioscience 61: 19–26.CrossRefGoogle Scholar
- Comin, D., Hobijn, B., & Rovito, E. (2008). A new approach to measuring technology with an application to the shape of the diffusion curves. Journal of Technology Transfer 33: 187–207.CrossRefGoogle Scholar
- Comin, D., Easterly, W., & Gong, E. (2010). Was the wealth of nations determined in 1000 BC? American Economic Journal: Macroeconomics 2: 65–97.CrossRefGoogle Scholar
- Corruption Perceptions Index. (2005–2009). http://www.transparency.org/policy_research/surveys_indices/cpi.
- Daniele, V. & Ostuni, N. (2013). The burden of disease and the IQ of nations. Learning and Individual Differences 28: 109–118.CrossRefGoogle Scholar
- Dunbar, R., & Shultz, S. (2007). Evolution in the social brain. Science 317: 1344–1347.PubMedCrossRefGoogle Scholar
- Dunn, R. R., Davies, T. J., Harris, N. C. et al. (2010). Global drivers of human pathogen richness and prevalence. Proceedings of the Royal Society B 27: 2587–2595. CrossRefGoogle Scholar
- Economist Intelligence Unit. (2008). http://www.eiu.com.
- Eppig, C., Fincher, C. L., & Thornhill, R. (2010). Parasite prevalence and the worldwide distribution of cognitive ability. Proceedings of the Royal Society of London B 277: 3801–3808.CrossRefGoogle Scholar
- Eppig, C., Fincher, C. L., & Thornhill, R. (2011). Parasite prevalence and the distribution of intelligence among the states of the USA. Intelligence 39: 155–160.CrossRefGoogle Scholar
- Ferris, T. (2010). The Science of Liberty: Democracy, Reason, and the Laws of Nature. Harper, New York, NY.Google Scholar
- Flinn, M. V., Geary, D. C., & Ward, C. V. (2005). Ecological dominance, social competition, and coalitionary arms races: Why humans evolved extraordinary intelligence. Evolution and Human Behavior 26: 10–46.CrossRefGoogle Scholar
- Flynn, J. R. (1987). Massive IQ gains in 14 nations: What IQ tests really measure. Psychological Bulletin 101: 171–191.CrossRefGoogle Scholar
- Freedom House. (2008). http://www.freedomhouse.org.
- Furlow, F. B., Armijo-Prewitt, T., Gangestad, S. W. et al. (1997). Fluctuating asymmetry and psychometric intelligence. Proceedings of the Royal Society B 264: 823–829.PubMedCentralPubMedCrossRefGoogle Scholar
- Gallup, J. L., & Sachs, J. D. (2001). The economic burden of malaria. The American Journal of Tropical Medicine and Hygiene 64: 85–96.PubMedGoogle Scholar
- Gorodnichenko, Y., & Roland, G. (2011). Individualism, innovation, and long-run growth. Proceedings of the National Academy of Sciences 108: 21316–21319.CrossRefGoogle Scholar
- Gottfredson, L. S. (1997). Why g matters: The complexity of everyday life. Intelligence 24: 79–132.CrossRefGoogle Scholar
- Greif, A. (1994). Cultural beliefs and the organization of society: A historical and theoretical reflection on collectivist and individualist societies. The Journal of Political Economy 102: 912–950.CrossRefGoogle Scholar
- Griliches, Z. (1957). Hybrid corn: An exploration in the economics of technological change. Econometrica 25: 501–522.CrossRefGoogle Scholar
- Guernier, V., Hochberg, M. E., & Guégan, J. -F. (2004). Ecology drives the worldwide distribution of human diseases. PLoS Biology 2: 740–746.CrossRefGoogle Scholar
- Guiso, L., Sapienza, P., & Zingales, L. (2006). Does culture affect economic outcomes? Journal of Economic Perspectives 20: 23–48.CrossRefGoogle Scholar
- Hassall, C., & Sherratt, T. N. (2011). Statistical inference and spatial patterns in correlates of IQ. Intelligence 39: 303–310.CrossRefGoogle Scholar
- Holliday, M. A. (1986). Body composition and energy needs during growth. Human Growth: A Comprehensive Treatise, Vol. 2 (eds. F. Falkner & J. M. Tanner), pp. 101–117. Plenum, New York, NY.Google Scholar
- Jardin-Botelho, A., Raff, S., Rodrigues, R. A. et al. (2008). Hookworm, Ascaris lumbricoides infection and polyparasit ism associated with poor cognitive performance in Brazilian schoolchildren. Tropical Medicine and International Health 13: 994–1004.CrossRefGoogle Scholar
- Jencks, S. F., Huff, E. D., & Cuerdon, T. (2003). Change in the quality of care delivered to Medicare beneficiaries, 1989–1999 to 2000–2001. JAMA 289: 305–312.PubMedCrossRefGoogle Scholar
- Johnson, W., Segal, N. L., & Bouchard Jr., T. J. (2008). Fluctuating asymmetry and general intelligence: No genetic or phenotypic association. Intelligence 36: 279–288.CrossRefGoogle Scholar
- Jolly, A. (1966). Social behavior and primate intelligence. Science 153: 501–506.PubMedCrossRefGoogle Scholar
- Kanazawa, S. (2008). Temperature and evolutionary novelty as forces behind the evolution of general intelligence. Intelligence 36: 99–108.CrossRefGoogle Scholar
- Landes, D. S. (1998). The Wealth and Poverty of Nations. W.W. Norton and Co., New York, NY.Google Scholar
- Lynn, R. (1990). The role of nutrition in secular increases in intelligence. Personality and Individual Differences 11: 263–285.Google Scholar
- Lynn, R. (1993). Nutrition and intelligence. In Biological Approaches to the Study of Human Intelligence (ed. P. A. Vernon), pp. 243–258. Ablex Publishing, Norwood, NJ.Google Scholar
- Lynn, R., & Mikk, J. (2007). National differences in intelligence and educational attainment. Intelligence 35: 115–121.CrossRefGoogle Scholar
- Lynn, R., & Vanhanen, T. (2001). National IQ and economic development: A study of eighty-one nations. Mankind Quarterly 41: 415–435.Google Scholar
- Lynn, R., & Vanhanen, T. (2002). IQ and the Wealth of Nations. Praeger, Westport, CT.Google Scholar
- Lynn, R., & Vanhanen, T. (2006). IQ and Global Inequality. Washington Summit Publishers, Augusta, GA.Google Scholar
- Mackintosh, J. A. (2001). The antimicrobial properties of malanocytes, melanosomes and melanin and the evolution of black skin. Journal of Theoretical Biology 211: 101–113.PubMedCrossRefGoogle Scholar
- Manning, J. T., Bundred, P. E., & Henzi, P. (2003). Melanin and HIV in sub-Saharan Africa. Journal of Theoretical Biology 223: 131–133.PubMedCrossRefGoogle Scholar
- McDaniel, M. A. (2006). Estimating state IQ: Measurement challenges and preliminary correlates. Intelligence 34: 607–619.CrossRefGoogle Scholar
- National Center for Education Statistics, 2009, http://nces.ed.gov/datatools/index.asp?DataToolSectionID=5.
- Penke, L., Bates, T. C., Gow, A. J. et al. (2009). Symmetric faces are a sign of successful cognitive aging. Evolution and Human Behavior 30: 429–437.CrossRefGoogle Scholar
- Price-Smith, A. T. (2002). The Health of Nations: Infectious Disease, Environmental Change, and Their Effects on National Security and Development. MIT Press, Cambridge, MA.Google Scholar
- Price-Smith, A. T. (2009). Contagion and Chaos: Disease, Ecology, and National Security in the Era of Globalization. MIT Press, Cambridge, MA.Google Scholar
- Prokosch, M. D., Yeo, R. A., & Miller, G. F. (2005). Intelligence tests with higher g-loadings show higher correlations with body symmetry: Evidence for a general fitness factor mediated by developmental stability. Intelligence 33: 203–213.CrossRefGoogle Scholar
- Reeve, C. L. (2009). Expanding the g-nexus: Further evidence regarding the relations among national IQ, religiosity and national health outcomes. Intelligence 37: 495–505.CrossRefGoogle Scholar
- Reeve, C. L., & Basalik, D. (2010). Average state IQ, state wealth and racial composition as predictors of state health statistics: Partial support for ‘g’ as a fundamental cause of health disparities. Intelligence 38: 282–289.CrossRefGoogle Scholar
- Ryan, J. J., Bartels, J. M., & Townsend, J. M. (2010). Associations between climate and IQ in the United States of America. Psychological Reports 107: 251–254.PubMedCrossRefGoogle Scholar
- Sachs, J., & Malaney, P. (2002). The economic and social burden of malaria. Nature 415: 680–685.PubMedCrossRefGoogle Scholar
- Smith, A. 1759 (2010). The Theory of Moral Sentiments. Penguin, New York, NY.Google Scholar
- Smith, A. 1776 (2012). An Inquiry into the Nature and Causes of the Wealth of Nations. Simon and Brown, New York, NY.Google Scholar
- Taylor, M. Z., & Wilson, S. (2012). Does culture still matter? The effects of individualism on national innovation rates. Journal of Business Venturing 27:234–247.CrossRefGoogle Scholar
- Templer, D. I., & Arikawa, H. (2006). Temperature, skin color, per capita income, and IQ: An international perspective. Intelligence 34: 121–139.CrossRefGoogle Scholar
- Thornhill, R. & Gangestad, S. W. (2008). The Evolutionary Biology of Human Female Sexuality. Oxford University Press, New York, NY.Google Scholar
- Thornhill, R. & Møller, A. P. (1997). Developmental stability, disease and medicine. Biological Review 72: 497–548.CrossRefGoogle Scholar
- Ugur, M., & Dasgupta, N. (2011). Evidence on the economic growth impacts of corruption in low-income countries and beyond: A systematic review. EPPI-Centre, Social Science Research Unit, Institute of Education, University of London, London, UK.Google Scholar
- U.S. Census Bureau, U.S. Department of Commerce. (2000). http://www.census.gov.
- U.S. Department of Education. (2009). State Contacts and Information. http://www2.ed.gov/about/contacts/state/index.html.
- Vandello, J. A., & Cohen, D. (1999). Patterns of individualism and collectivism across the United States. Journal of Personality and Social Psychology 77: 279–292.CrossRefGoogle Scholar
- Vanhanen, T. (2003). Democratization: A Comparative Analysis of 170 Countries. Routledge, New York.Google Scholar
- Venkataramani, A. (2010). Early Life Exposure to Malaria and Cognition and Skills in Adulthood: Evidence from Mexico. Social Science Research Network, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1679164.
- Watkins, W. E., & Pollitt, V. (1997). ‘Stupidity or worms’: Do intestinal worms impair mental performance? Psychological Bulletin 121: 171–191.PubMedCrossRefGoogle Scholar
- Wicherts, J. M., Borsboom, D., & Dolan, C. V. (2010). Why national IQs do not support evolutionary theories of intelligence. Personality and Individual Differences 48: 91–96.CrossRefGoogle Scholar
- Wilson, E. O. (1998). Consilience: The Unity of Knowledge. Knopf, New York, NY.Google Scholar
- World Bank. (2008). http://data.worldbank.org/topic/education.
- World Factbook. (2007). http://www.cia.gov.
- World Factbook. (2008). http://www.cia.gov.
- World Health Organization. (2004). Global Burden of Disease: 2004 Update. World Health Organization, Geneva, Switzerland.Google Scholar
- Yeo, R. A., Gangestad, S. W., & Thoma, R. J. (2007). Developmental instability and individual variation in brain development: Implications for the origin of neurodevelopmental disorders. Current Directions in Psychological Science 16: 245–249.CrossRefGoogle Scholar