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Genes and Ideologies

Published online by Cambridge University Press:  09 June 2008

Evan Charney
Evan Charney
Affiliation:
Duke University. E-mail: [email protected]
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Abstract

There is a trend among behavioral scientists to view ever more complex attitudes or systems of belief as in some sense genetically determined (or “heritable”). Consistent with this trend is the recent article of Alford, Funk, and Hibbing titled “Are Political Orientations Genetically Transmitted?” in which the authors claim to have demonstrated that when it comes to the transmission of political ideologies, genes count for more than environment. Their article has received an enormous amount of attention among political scientists and in the popular press. I critically evaluate the research technique on the basis of which the authors' support their claims and argue that it suffers from significant methodological flaws. Such flaws notwithstanding, I demonstrate that the authors' data do not clearly support their conclusions. I then question the cogency, from an historical and theoretical perspective, of proposing the existence of “liberal” and “conservative” “phenotypes” and “genotypes.” My argument has implications beyond the findings of Alford, Funk, and Hibbing, and applies to all studies that claim to have demonstrated the heritability of complex and politically relevant attitudes.

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Exchange
Information
Perspectives on Politics , Volume 6 , Issue 2 , June 2008 , pp. 299 - 319
Copyright
Copyright © American Political Science Association 2008

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References

Ainslie, R.C. 1997. The Psychology of Twinship. Northvale, NJ: Jason Aronson.Google Scholar
Alford, J.R., Funk, C., and Hibbing, J.. 2005. Are political orientations genetically transmitted? American Political Science Review 99 (2): 153–67.CrossRefGoogle Scholar
Alford, J.R., and Hibbing, J.R.. 2004. The origin of politics: An evolutionary theory of political behavior. Perspectives on Politics 2 (4): 707–23.CrossRefGoogle Scholar
Altemeyer, R.A. 1981. Right-Wing Authoritarianism. Winnipeg: University of Manitoba Press.Google Scholar
Bachner-Mehlman, R.I. Gritsenko, Nemanov, L., Zohar, A.H., Dina, C., and Epstein, R.P.. 2005. Dopaminergic polymorphisms associated with self-report measures of human altruism: A fresh phenotype for the dopamine D4 receptor. Molecular Psychiatry 10: 333–35.CrossRefGoogle Scholar
Bailey, R. 2004. “Pathologizing Conservatism.” Reason Online (http://www.reason.com/rb/rb/102004.shtml), October 20.Google Scholar
Beckwith, Jonathan. 2006. Whither human behavioral genetics? In Wrestling with Behavioral Genetics: Science, Ethics, and Public Conservation, ed. Parens, E., Chapman, A., and Press, N.. Baltimore: Johns Hopkins University Press.Google Scholar
Bouchard, T. 1993. Genetic and environmental influences on adult personality: Evaluating the evidence. In Basic Issues in Personality, ed. Hettema, J. and Deary, I.. Dordrecht, The Netherlands: Kluwer.Google Scholar
Bouchard, T.J. Jr., Lykken, D.T., McGue, M., Segal, N.L., and Tellegen, A.. 1990. Sources of human psychological differences: The Minnesota study of twins reared apart. Science 12 (October): 223–28.CrossRefGoogle Scholar
BouchardT.J,. T.J,., and McGue, M.. 2003. Genetic and environmental influences on human psychological differences. Journal of Neurobiology 54: 4–45.CrossRefGoogle ScholarPubMed
Bouchard, T.J. Jr., McGue, M., Lykken, D.T., and Tellegen, A.. 1999. Intrinsic and extrinsic religiousness. Twin Research 2 (June): 88–98.CrossRefGoogle ScholarPubMed
Bouchard, T.J. Jr., Segal, N.L., Tellegen, A., McGue, M., Keyes, M., and Krueger, R.. 2003. Evidence for the construct validity and heritability of the Wilson-Patterson Conservatism Scale: A reared-apart twins study of social attitudes. Personality and Individual Differences 34: 959–69.CrossRefGoogle Scholar
Bradburn, N.M., Rips, L., and Shevell, S.K.. 1987. Answering autobiographical questions: The impact of memory and inferences on surveys. Science 236: 157–61.CrossRefGoogle ScholarPubMed
Bruer, J.T., and Greenough, W.T.. 2001. The subtle science of how experience affects the brain. In Critical Thinking About Critical Periods, ed. Donald, B., Bailey, J. Jr., Bruer, J.T., Lichtman, J.W., and Symons, F.J.. Baltimore: Brookes Publishing Co.Google Scholar
Burke, Edmund. 1999. Reflections on the Revolution in France. Select Works of Edmund Burke, vol. 2. Indianapolis: Liberty Fund.Google Scholar
Burns, G.L., and Farina, A.. 1992. The role of physical attractiveness in adjustment. Genetic, Social, and General Psychology Monographs 118: 157–94.Google ScholarPubMed
Buss, D.M. 1994. The Evolution of Desire: Strategies of Human Mating. New York: Basic Books.Google Scholar
Caspi, A., McClay, J., Moffitt, T., Mill, J., Martin, J., Craig, I., Taylor, A., and Poulton, R.. 2002. Role of genotype in the cycle of violence in maltreated children. Science 2 297 (5582): 851–54.CrossRefGoogle ScholarPubMed
Cooper, R.M., and Zubek, J.P.. 1958. Effects of enriched and restricted early environments on the learning ability of bright and dull rats. Canadian Journal of Psychology 12: 159–164.CrossRefGoogle Scholar
Costa, P.T. Jr., and McCrae, R.R.. 1992. NEO PI-R: Professional Manual. Odessa, FL: Psychological Assessment Resources.Google Scholar
Daniels, M., Devlin, B., and Roeder, R.. 1997. Of genes and IQ. In Intelligence, Genes, and Success: Scientists Respond to the Bell Curve, ed. B., B. Devlin, Fienberg, S.E., Resnick, D.P., and Roeder, K.. New York: Copernicus.Google Scholar
D'Souza, D. 2002. Letters to a Young Conservative. New York: Basic Books.Google Scholar
Eagly, A.H., Ashmore, R.D., Makhijani, G.M., and Longo, L.C.. 1991. What is beautiful is good, but… : A meta-analysis of research on the physical attractiveness stereotype. Psychological Bulletin 110: 109–128.CrossRefGoogle Scholar
Eckert, E.D., Heston, L., and Bouchard, T.J.. 1981. MZ twins reared apart: Preliminary findings of psychiatric disturbances and traits. Twin Research 3, Part B, ed. Gedda, L., Parisi, P., and Nance, W.E.. New York: A. R. Liss.Google ScholarPubMed
Elkins, Lindsay. 2003. Five foot two with eyes of blue: Physical profiling and the prospect of a genetics-based criminal justice system. Notre Dame Journal of Law Ethics & Public Policy 17: 269.Google ScholarPubMed
Evans, D.M., and Martin, N.G.. 2000. The validity of twin studies. GeneScreen 1: 77–79.CrossRefGoogle Scholar
Falconer, D.S. 1989. Introduction to Quantitative Genetics, 3d ed.New York: John Wiley and Sons.Google Scholar
Fallon, J.H., Keator, D., Mbogori, J., and Potkin, S.G.. 2004. Hostility differentiates the brain metabolic effects of nicotine. Cognitive Brain Research 18: 142–148.CrossRefGoogle ScholarPubMed
Feingold, A. 1992. Good-looking people are not what we think. Psychological Bulletin 111: 304–41.CrossRefGoogle Scholar
Galton, W. 1875. The history of twins as a criterion of the relative powers of nature and nurture. Journal of the Anthropological Institute of Great Britain and Ireland 5: 391–406.CrossRefGoogle Scholar
Ge, X., and Chadoret, R.J.. 1996. The developmental interface between nurture and nature: A mutual influence model. Developmental Psychology 32: 524–89.CrossRefGoogle Scholar
Gottfredson, L.S. 1994. Egalitarian fiction and collective fraud. Society 31 (3): 553–60.CrossRefGoogle Scholar
Gottfredson, L.S. 1998. “The General Intelligence Factor: Despite some popular assertions, a single factor for intelligence, called g, can be measured with IQ tests and does predict success in life.” Scientific American (Winter), 24–29.Google Scholar
Guo, Sun-Wei. 2001. Does higher concordance in monozygotic twins than in dizygotic twins suggest a genetic component? Human Heredity 51: 121–32.CrossRefGoogle ScholarPubMed
Hamer, D. 2004. The God Gene: How Faith Is Hardwired into Our Brains. New York: Doubleday.Google Scholar
Hamer, D., and Copeland, P.. 1998. Living with Our Genes. New York: Anchor Doubleday.Google Scholar
Harden, K.P., Turkheimer, E., Emery, R.E., D'Onofrio, B.M., Slutske, W.S., Heath, A.C., and Martin, N.G.. 2007. Marital conflict and conduct problems in children of twins. Child Development 78 (1): 1–18.CrossRefGoogle ScholarPubMed
Herrnstein, R.J., and Murray, C.. 1994. The Bell Curve: Intelligence and Class Structure in American Life. New York: Free Press.Google Scholar
Hettema, J.M., Neale, M.C., and Kendler, K.S.. 1995. Physical similarity and the equal environment assumption in twin studies of psychiatric disorders. Behavior Genetics 25: 327–35.CrossRefGoogle ScholarPubMed
Heywood, A. 1992. Political Ideologies. New York: St. Martin's Press.CrossRefGoogle Scholar
Hobhouse, L.T. 1964. Liberalism. New York: Oxford University Press.Google Scholar
Holsinger, K. 1981. Comment: The blunting of Occam's Razor. Canadian Journal of Zoology 59 144–6.CrossRefGoogle Scholar
Horowitz, A.V., Videon, T.M., Schwartz, M.F., and Davis, D.. 2003. Rethinking twins and environments: Possible social sources for assumed genetic influences in twin research. Journal of Health and Social Behavior 44 (June): 11–129.Google Scholar
Hurford, J. 1991. The evolution of the critical period for language acquisition. Cognition 40: 159–201.CrossRefGoogle ScholarPubMed
Jacoby, R., and Glauberman, N.. 1995. The Bell Curve Debate. New York: Times Books.Google Scholar
Jensen, A.R. 1969. How much can we boost IQ and scholastic achievement? Harvard Educational Review 39: 1–123.CrossRefGoogle Scholar
Johnson, M.H. 2001. Functional brain development in humans. Nature Reviews Neuroscience 2: 475–83.Google Scholar
Joseph, J. 2000. Not in their genes: A critical review of the genetics of attention-deficit disorder. Developmental Review 20: 539–67.CrossRefGoogle Scholar
Joseph, J. 2004. The Gene Illusion. New York: Algora Publishing.Google Scholar
Jost, J.T., Glaser, J., Kruglanski, A.W., Sulloway, F.J.. 2003. Political conservatism as motivated social cognition. Psychological Bulletin 129 (3): 339–75.CrossRefGoogle ScholarPubMed
Kahn, D.M. 2003. Nature versus nurture revisited: An old idea with a new twist. Progress in Neurobiology 70 (1): 33–52.Google Scholar
Kamin, L.J., and Goldberger, A.S.. 2002. Twin studies in behavioral research: A skeptical view. Theoretical Population Biology 61: 83–95.CrossRefGoogle ScholarPubMed
Karmiloff-Smith, Annette. 2006. Ontogeny, genetics, and evolution: A perspective from developmental cognitive neuroscience. Biological Theory 1 (1): 44–51.CrossRefGoogle Scholar
Kempermann, G., Kuhn, H.G., and Gage, F.H.. 1997. More hippocampal neurons in adult mice living in an enriched environment. Nature 386: 493–95.CrossRefGoogle Scholar
Kendler, K.S., Neale, M.C., Kessler, R.C., Heath, A.C., and Eaves, L.J.. 1994. Parental treatment and the equal environmental assumption in twin studies of psychiatric illness. Psychiatric Medicine 24: 579–90.Google ScholarPubMed
Kennedy, D. 1999. Freedom from Fear: The American People in Depression and War, 1929–1945. New York: Oxford University Press.Google Scholar
Koenig, L.B., McGue, M., Krueger, R.F., and Bouchard, T.J.. 2005. Genetic and environmental influences on religiousness: Findings for retrospective and current religiousness ratings. Journal of Personality 73 (2): 471–88.CrossRefGoogle ScholarPubMed
Komlos, J., and Bauer, M.. 2003. “From the Tallest to (One of) the Fattest: The Enigmatic Fate of the American Population in the 20th Century.” CESifo Working Paper Series No. 1028 (http://papers.ssrn.com/sol3/papers.cfm?abstract_id=444501).CrossRefGoogle Scholar
LaBuda, M.C., Svikis, D.S., and Pickens, R.. 1997. Twin closeness and co-twin risk for substance use disorders: Assessing the impact of the equal environment assumption. Psychiatry Research 70: 155–64.CrossRefGoogle ScholarPubMed
Langinvainio, H., Koskenvuo, M., and Kaprio, J.. 1984. Finnish twins reared apart. II: Validation of zygosity, environmental dissimilarity, and weight and height. Acta Geneticae Medicae et Gemellologiae 33: 251–58.CrossRefGoogle ScholarPubMed
Lasch, C. 1991. The True and Only Heaven: Progress and Its Critics. New York and London: Norton.Google Scholar
Lewontin, R. 2000. The Triple Helix: Gene, Organism, and Environment. Cambridge, MA: Harvard University Press.Google Scholar
Lykken, D. 2000. Happiness: The Nature and Nurture of Joy and Contentment. New York: St. Martin's Press.Google Scholar
Madison, James, Hamilton, Alexander, and Jay, John. 1989. The Federalist, ed. Cooke, Jacob E.. Middletown, CT: Wesleyan University Press.Google Scholar
McCartney, K., Harris, M.J., and Bernieri, F.. 1990. Growing up and growing apart. Psychological Bulletin 107: 226–37.CrossRefGoogle ScholarPubMed
McClearn, G.E. 2004. Nature and nurture: Interaction and coaction. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 124B (1): 124–30.CrossRefGoogle ScholarPubMed
Meaney, Michael J. 2001. Nature, nurture, and the disunity of knowledge. Annals of the New York Academy of Sciences. New York: New York Academy of Sciences.CrossRefGoogle ScholarPubMed
Moffitt, T.E. 2005. Genetic and environmental influences on antisocial behaviors: Evidence from behavioral-genetic research. In Advances in Genetics 55, ed. Hall, Jeffrey C.. Amsterdam: Elsevier Academic Press.Google Scholar
Mustanski, B.S., Dupree, M.G., Nievergelt, C.M., Bocklandt, S., Schork, N.J., and Hamer, D.H.. 2005. A genomewide scan of male sexual orientation. Human Genetics 116: 272–278.CrossRefGoogle ScholarPubMed
Neale, M.C., and Cardon, L.R.. 1992. Methodology for Genetic Studies of Twins and Families. Dordrecht, The Netherlands: Kluwer Academic.CrossRefGoogle Scholar
Nelson, C.A. 2000. Neural plasticity and human development: The role of early experience in sculpting memory systems. Developmental Science 3: 115–130.CrossRefGoogle Scholar
O'Connor, T.G., and Deater-Deckard, K.. 1998. Genotype-environment correlations in late childhood early adolescence. Developmental Psychology 34: 970–82.CrossRefGoogle ScholarPubMed
Parens, E., Chapman, A., and Press, N., eds. 2006. Wrestling with Behavioral Genetics: Science, Ethics, and Public Conservation. Baltimore: Johns Hopkins University Press.Google Scholar
Penderson, N.L., Plomin, R., Nesselraode, J.R., McClearn, G.E.. 1992. A quantitative genetic analysis of cognitive abilities during the second half of the life span. Psychological Science 3: 346–53.CrossRefGoogle Scholar
Perlini, A.H., Marcello, A., Hansen, S.D., Pudney, W.. 2001. Effects of male age and physical appearance on evaluations of attractiveness, social desirability and resourcefulness. Social Behavior and Personality 29 (3): 277–87.CrossRefGoogle Scholar
Plomin, R. 2004. Nature and Nurture: An Introduction to Human Behavioral Genetics. Belmont, CA: Wadsworth/Thomson.Google Scholar
Plomin, R., and Kosslyn, S.M.. 2001. Genes, brain and cognition. Nature Reviews Neuroscience 4: 1153–54.CrossRefGoogle ScholarPubMed
Quinton, A. 1993. Conservatism. In A Companion to Contemporary Political Philosophy, ed. Goodin, R. and Petit, P.. Oxford: Blackwell Publishers.Google Scholar
Rampon, C., Jiang, C.H., Dong, H., Tang, Y.P., Lockhart, D.J., Schultz, P.G., Tsien, J.Z., and Hu, Y.. 2000. Effects of environmental enrichment on gene expression in the brain. Proceedings of the National Academy of Sciences USA 97: 12880–84.CrossRefGoogle ScholarPubMed
Rhee, S.H., and Waldman, I.D.. 2002. Genetic and environmental influences on antisocial behavior: A meta-analysis of twin and adoption studies. Psychological Bulletin 128 (May): 490–529.CrossRefGoogle ScholarPubMed
Richardson, K., and Norgate, S.. 2005. The equal environment assumption of classical twin studies may not hold. British Journal of Educational Psychology 75: 339–50.CrossRefGoogle Scholar
Robbins, L.C. 1963. The accuracy of parental recall of aspects of child development and of child rearing practices. Journal of Abnormal and Social Psychology 66: 261–70.CrossRefGoogle ScholarPubMed
Rose, R. 1991. Twin studies and psychosocial epidemiology. In Genetic Issues in Psychosocial Epidemiology, ed. Tsuang, M., Kendler, K., Lyons, M.. New Brunswick, NJ: Rutgers University Press.Google Scholar
Rowe, D.C. 1994. The Limits of Family Experience: Genes, Experience and Behavior. New York: Guilliford.Google Scholar
Rushton, J.P., Littlefield, C.H., and Lumsden, C.J.. 1986. Gene-culture coevolution of complex social behavior: Human altruism and mate choice. Proceedings of the National Academy of Sciences 83 (19): 7340–43.CrossRefGoogle ScholarPubMed
Rutter, Michael. 1996. Concluding remarks. In Genetics of Criminal and Antisocial Behavior, ed. Bock, Gregory R. and Goode, Jamie A.. New York: John Wiley and Sons.Google Scholar
Ryan, A. 1993. Liberalism. In A Companion to Contemporary Political Philosophy, ed. Goodin, R. and Petit, P.. Oxford: Blackwell Publishers.Google Scholar
Sandbank, A. 1999. Twin and Triplet Psychology. New York: Routledge.Google Scholar
Scarr, S., and Carter-Saltzman, L.. 1979. Twin method: Defense of a critical assumption. Behavior Genetics 9: 527–42.CrossRefGoogle ScholarPubMed
Searle, John R. 1995. The Social Construction of Reality. New York, NY: The Free Press.Google Scholar
Shklar, J. 1984. The liberalism of fear. In Liberalism and the Moral Life, ed. Rosenblum, N.. Cambridge MA: Harvard University.Google Scholar
Shonkoff, J.P., and Phillips, D.A., eds. 2000. From Neurons to Neighborhoods: The Science of Early childhood Development. Washington, DC: National Academy Press.Google Scholar
Sigelman, L. 2006. Report of the editor of the American Political Science Review. PS: Political Science and Politics 40 (1): 171–73.Google Scholar
Silventoinen, K., Kaprio, J., Lahelma, E., and Koskenvuo, M.. 2000. Relative effect of genetic and environmental factors on body height: Differences across birth cohorts among Finnish men and women. American Journal of Public Health 90: 627–30.Google ScholarPubMed
Smart, J.C.C. 1973. An outline of a system of utilitarian ethics. In Utilitarianism: For and Against, ed. Smart, J.C.C. and Williams, Bernard. Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Smith, A. 1976 [1775]. The Wealth of Nations. Oxford: Clarendon Press.Google Scholar
Tomarken, A., and Waller, N.G.. 2005. Structural equation modeling as a data-analytic framework for clinical science: Strengths, limitations, and misconceptions. Annual Review of Clinical Psychology 1: 31–65.CrossRefGoogle Scholar
Wahlstein, D., and Gottleib, G.. 1997. The invalid separation of effects of nature and nurture: Lessons from animal experimentation. In Intelligence, Heredity and Environment, ed. Sternberg, R.J. and Grogorenko, E.. New York: Cambridge University Press.Google Scholar
Waldron, Jeremy. 1993. Liberal Rights. Cambridge: Cambridge University Press.Google Scholar
Watson, P. 1982. Twins: An Uncanny Relationship. New York: Viking.Google Scholar
Weber, M. 1978. Economy and Society. Ed. G. Roth and C. Wittich. Berkeley: University of California Press.Google Scholar
Webster, M. Jr., and Driskell, J.E. Jr. 1983. Beauty as status. American Journal of Sociology 89: 140–65.CrossRefGoogle Scholar
Wyman, R.J. 2005. Experimental analysis of nature-nurture interactions. Journal of Experimental Zoology and Comparative Experimental Biology 303 (6): 415–21.CrossRefGoogle ScholarPubMed