Don't Look, Don't Touch, Don't Eat: The Science Behind Revulsion

by Valerie Curtis

  Fessler, D. M. T. “Shame in Two Cultures: Implications for Evolutionary Approaches.” Journal of Cognition and Culture 4, no. 2 (2004): 207–62.

  Fessler, D. M. T., S. J. Eng, and C. D. Navarrete. “Elevated Disgust Sensitivity in the First Trimester of Pregnancy: Evidence Supporting the Compensatory Prophylaxis Hypothesis.” Evolution and Human Behavior 26 (2005): 344–51.

  Flaxman, S. M., and P. W. Sherman. “Morning Sickness: A Mechanism for Protecting Mother and Embryo.” Quarterly Review of Biology 75, no. 2 (2000): 113–48.

  Fleischman, D. S., M. de Barra, G. Webster, R. Aunger, G. Judah, and V. Curtis. “Sensor Recorded Changes in Rates of Hand Washing with Soap in Response to the Media Reports of the H1N1 Pandemic in Britain.” BMJ Open 1 (2011).

  Fleischman, D. S., and D. M. T. Fessler. “Progesterone’s Effects on the Psychology of Disease Avoidance: Support for the Compensatory Behavioral Prophylaxis Hypothesis.” Hormones and Behavior 59, no. 2 (2011): 271–75.

  Folstad, I., O. Halvorsen, and A. C. Nilssen. “Parasite Avoidance: The Cause of Post-Calving Migrations in Rangifer?” Canadian Journal of Zoology 69, no. 9 (1991): 2423–29.

  Franks, N. R., J. W. Hooper, C. Webb, and A. Dornhaus. “Tomb Evaders: House-Hunting Hygiene in Ants.” Biology Letters 1 (2005): 190–92.

  Freeland, W. J. “Pathogens and the Evolution of Primate Sociality.” Biotropica 8, no. 1 (1976): 12–24.

  Fretwell, P. T., and P. N. Trathan. “Penguins from Space: Faecal Stains Reveal the Location of Emperor Penguin Colonies.” Global Ecology and Biogeography 18, no. 5 (2009): 543–52.

  Freud, S., J. Strachey, and A. Richards. On Sexuality: Three Essays on the Theory of Sexuality and Other Works (1905). London: Penguin Books, 1977.

  Fry, S., and U. Blumenbach. Paperweight. London: Arrow, 2004.

  Fumagalli, M., M. Sironi, U. Pozzoli, A. Ferrer-Admettla, L. Pattini, and R. Nielsen. “Signatures of Environmental Genetic Adaptation Pinpoint Pathogens as the Main Selective Pressure through Human Evolution.” PLOS Genetics 7, no. 11 (2011): e1002355. doi:10.1371/journal.pgen.1002355.

  Fung, I. C.-H., and S. Cairncross. “Effectiveness of Handwashing in Preventing SARS: A Review.” Tropical Medicine and International Health 11, no. 11 (2006): 1749–58.

  Gajdusek, D. C. “Unconventional Viruses and the Origin and Disappearance of Kuru.” In Nobel Lectures in Physiology or Medicine 1971–1980, ed. J. Lindsten, 305–54. Stockholm: Karolinska Institute, 1977.

  Garcia, J., D. Forthman-Quick, and B. White. “Conditioned Disgust and Fear from Mollusk to Monkey.” In Primary Neural Substrates of Learning and Behavioral Change, ed. D. L. Alkon and J. Farley, 47–61. New York: Cambridge University Press, 1984.

  Gehlbach, F. R., and R. S. Baldridge. “Live Blind Snakes (Leptotyphlops dulcis) in Eastern Screech Owl (Otus asio) Nests: A Novel Commensalism.” Oecologia 71, no. 4 (1987): 560–63.

  Gilbert, G., director. Jamie’s School Dinners. 48 minutes. Channel 4 (UK), 2005.

  Giner-Sorolla, R., and P. Espinosa. “Social Cuing of Guilt by Anger and of Shame by Disgust.” Psychological Science 22, no. 1 (2011): 49–53.

  Gottman, J. M. What Predicts Divorce? The Relationship between Marital Processes and Marital Outcomes. Hillsdale, NJ: Lawrence Erlbaum, 1994.

  Greenland, K., S. Cairncross, O. Cumming, and V. Curtis. “Editorial: Can We Afford to Overlook Hand Hygiene Again?” Tropical Medicine and International Health 18, no. 3 (2013): 246–49.

  Gumert, M. D. “Payment for Sex in a Macaque Mating Market “Animal Behaviour 74, no. 6 (2007): 1655–67.

  Gunn, A., and R. J. Irvine. “Subclinical Parasitism and Ruminant Foraging Strategies: A Review.” Wildlife Society Bulletin 31, no. 1 (2003): 117–26.

  Haidt, J. The Happiness Hypothesis: Putting Ancient Wisdom and Philosophy to the Test of Modern Science. London: Heinemann, 2007.

  . The Righteous Mind: Why Good People Are Divided by Politics and Religion. London: Penguin Books, 2010.

  Haidt, J., C. McCauley, and P. Rozin. “Individual Differences in Sensitivity to Disgust: A Scale Sampling Seven Domains of Disgust Elicitors.” Personality and Individual Differences 16, no. 5 (1994): 701–13.

  Hamilton, W. “The Genetical Evolution of Social Behaviour.” Journal of Theoretical Biology 7 (1964): 1–52.

  Hammond, D., G. T. Fong, P. W. McDonald, S. Brown, and R. Cameron. “Graphic Canadian Cigarette Warning Labels and Adverse Outcomes: Evidence from Canadian Smokers.” American Journal of Public Health 94, no. 8 (2004): 1442–45.

  Harris, S. The Moral Landscape: How Science Can Determine Human Values. New York: Free Press, 2011.

  Hart, A. G., and F. L. W. Ratnieks. “Task Partitioning, Division of Labour and Nest Compartmentalisation Collectively Isolate Hazardous Waste in the Leafcutting Ant Atta cephalotes.” Behavioral Ecology and Sociobiology 49, no. 5 (2001): 387–92.

  Hart, B. L. “Behavioural Defences in Animals against Pathogens and Parasites: Parallels with the Pillars of Medicine in Humans.” Philosophical Transactions of the Royal Society B 366, no. 1583 (2011): 3406–17.

  Hart, B. L., E. Korinek, and P. Brennan. “Postcopulatory Genital Grooming in Male Rats: Prevention of Sexually Transmitted Infections.” Physiology and Behavior 41, no. 4 (1987): 321–25.

  Haselton, M. G., and D. Nettle. “The Paranoid Optimist: An Integrative Evolutionary Model of Cognitive Biases.” Personality and Social Psychology Review 10, no. 1 (2006): 47–66.

  Hennig, J., P. Pössel, and P. Netter. “Sensitivity to Disgust as an Indicator of Neuroticism: A Psychobiological Approach.” Personality and Individual Differences 20, no. 5 (1996): 589–96.

  Henrich, J. “The Evolution of Costly Displays, Cooperation and Religion: Credibility Enhancing Displays and Their Implications for Cultural Evolution.” Evolution and Human Behavior 30, no. 4 (2009): 244–60.

  Herz, R. That’s Disgusting: Unraveling the Mysteries of Repulsion. New York: W. W. Norton and Company, 2012.

  Heymann, D., ed. Control of Communicable Diseases Manual. 19th ed. Washington, DC: American Public Health Association, 2008.

  Hochschild, A. R. The Managed Heart: The Commercialization of Human Feelings. Berkeley: University of California Press, 1983.

  Hoefling, A., K. U. Likowski, R. Deutsch, M. Häfner, B. Seibt, A. Mühlberger, P. Weyers, and F. Strack. “When Hunger Finds No Fault with Moldy Corn: Food Deprivation Reduces Food-Related Disgust.” Emotion 9, no. 1 (2009): 50–58.

  Hölldobbler, B., and E. O. Wilson. The Ants. Cambridge, MA: Harvard University Press, 1990.

  Hosoi, S. A., and S. I. Rothstein. “Nest Desertion and Cowbird Parasitism: Evidence for Evolved Responses and Evolutionary Lag.” Animal Behaviour 59, no. 4 (2000): 823–40.

  Huang, D. B., and J. Zhou. “Effect of Intensive Handwashing in the Prevention of Diarrhoeal Illness among Patients with AIDS: A Randomized Controlled Study.” Journal of Medical Microbiology 56, no. 5 (2007): 659–63.

  Humphrey, J. H. “Child Undernutrition, Tropical Enteropathy, Toilets, and Handwashing.” Lancet 374 (2009): 1032–35.

  Hurtrez-Boussès, S., F. Renaud, J. Blondel, P. Perret, and M. J. Galan. “Effects of Ectoparasites of Young on Parents’ Behaviour in a Mediterranean Population of Blue Tits.” Journal of Avian Biology 31, no. 2 (2000): 266–69.

  Hutchings, M. R., I. Kyriazakis, T. G. Papachristou, I. J. Gordon, and F. Jackson. “The Herbivores’ Dilemma: Trade-Offs between Nutrition and Parasitism in Foraging Decisions.” Oecologia 124 (2000): 242–51.

  Inbar, Y., D. A. Pizarro, J. Knobe, and P. Bloom. “Disgust Sensitivity Predicts Intuitive Disapproval of Gays.” Emotion 9, no. 3 (2009): 435–39

  Isaksen, L. W. “Toward a Sociology of (Gendered) Disgust Images of Bodily Decay and the Social Organization of Care Work.” Journal of Family Issues 23, no. 7 (2002): 791–811.

  Jansen, G. C. M., A. O. Koloski-Ostrow, and E. M. Moormann, eds. Roman Toilets: Their Archaeology and Cultural History. Leuven, Belgium: Peeters Publishers, 2011.

  Jefferson, T., R. F
oxlee, C. Del Mar, L. Dooley, E. Ferroni, B. Hewak, A. Prabhala, S. Nair, and A. Rivetti. “Physical Interventions to Interrupt or Reduce the Spread of Respiratory Viruses: Systematic Review.” British Medical Journal 336 (2008): 77–80.

  Joyce, R. The Evolution of Morality. Cambridge, MA: MIT Press, 2006.

  Judah, G., R. Aunger, W. P. Schmidt, S. Michie, S. Granger, and V. Curtis. “Experimental Pretesting of Hand-Washing Interventions in a Natural Setting.” American Journal of Public Health 99, no. S2 (2009): S405–11.

  Karvonen, A., O. Seppala, and E. T. Valtonen. “Parasite Resistance and Avoidance Behaviour in Preventing Eye Fluke Infections in Fish.” Parasitology 129, no. 2 (2004): 159–64.

  Kass, L. “The Wisdom of Repugnance.” New Republic 216, no. 22 (1997): 17–26.

  Kavaliers, M., and D. D. Colwell. “Discrimination by Female Mice between the Odours of Parasitized and Non-Parasitized Males.” Proceedings of the Royal Society of London B 261 (1995): 31–35.

  Keisecker, J., D. Skelly, K. Beard, and E. Preisser. “Behavioral Reduction of Infection Risk.” Proceedings of the National Academy of Sciences USA 96 (1999): 9165–68.

  Kelly, D. Yuck! The Nature and Moral Significance of Disgust. Cambridge, MA: MIT Press, 2011.

  Kolnai, A. On Disgust. 1927. Translated by E. Kolnai. Peru, IL: Carus, 2004.

  Konrad, M., M. L. Vyleta, F. J. Theis, and S. Cremer. “Social Transfer of Pathogenic Fungus Promotes Active Immunisation in Ant Colonies.” PLOS Biology 10, no. 4 (2012): e1001300.

  Korsmeyer, C. Savoring Disgust: The Foul and the Fair in Aesthetics. Oxford: Oxford University Press, 2011.

  Krause, J., and J.-G. J. Godin. “Influence of Parasitism on the Shoaling Behaviour of Banded Killifish, Fundulus diaphanus.” Canadian Journal of Zoology 72 (1994): 1775–79.

  Krone, R., R. Bshary, M. Paster, M. Eisinger, P. van Treeck, and H. Schuhmacher. “Defecation Behaviour of the Lined Bristle-tooth Surgeonfish Ctenochaetus striatus (Acanthuridae).” Coral Reefs 27, no. 3 (2008): 619–22.

  Kuris, A. M., R. F. Hechinger, J. C. Shaw, K. L. Whitney, L. Aguirre-Macedo, C. A. Boch, A. P. Dobson, et al. “Ecosystem Energetic Implications of Parasite and Free-Living Biomass in Three Estuaries.” Nature 454, no. 7203 (2008): 515–18.

  Kurzban, R., and M. R. Leary. “Evolutionary Origins of Stigmatization: The Functions of Social Exclusion.” Psychological Bulletin 127, no. 2 (2001): 187–208.

  Laland, K. N., N. Atton, and M. M. Webster. “From Fish to Fashion: Experimental and Theoretical Insights into the Evolution of Culture.” Philosophical Transactions of the Royal Society B 366, no. 1567 (2011): 958–68.

  Laland, K. N., and G. R. Brown. Sense and Nonsense: Evolutionary Perspectives on Human Behaviour. Oxford: Oxford University Press, 2011.

  Lamont, M. Money, Morals and Manners: The Culture of the French and American Upper-Middle Class. Chicago: University of Chicago Press, 1992.

  Lévi-Strauss, C. The Origin of Table Manners. Vol. 3 of Mythologiques. Chicago: University of Chicago Press, 1990.

  Lieberman, D., J. Tooby, and L. Cosmides. “The Architecture of Human Kin Detection.” Nature 445, no. 7129 (2007): 727–31.

  Liljenquist, K., C. B. Zhong, and A. D. Galinsky. “The Smell of Virtue: Clean Scents Promote Reciprocity and Charity.” Psychological Science 21, no. 3 (2010): 381–83.

  Lindenbaum, S. “Understanding Kuru: The Contribution of Anthropology and Medicine.” Philosophical Transactions of the Royal Society B 363, no. 1510 (2008): 3715–20.

  Liu, L., H. L. Johnson, S. Cousens, J. Perin, S. Scott, J. E. Lawn, I. Rudan, H. Campbell, R. Cibulskis, and M. Li. “Global, Regional, and National Causes of Child Mortality: An Updated Systematic Analysis for 2010 with Time Trends since 2000.” Lancet 379 (2012): 2151–61.

  Livingstone-Smith, D. Less Than Human: Why We Demean, Enslave and Exterminate Others. New York: St. Martin’s Press, 2011.

  Loehle, C. “Social Barriers to Pathogen Transmission in Wild Animal Populations.” Ecology 76 (1995): 326–35.

  Longino, J. T. “True Anting by the Capuchin, Cebus capucinus.” Primates 25, no. 2 (1984): 243–45.

  Magee, W. J., W. W. Eaton, H. U. Wittchen, K. A. McGonagle, and R. C. Kessler. “Agoraphobia, Simple Phobia, and Social Phobia in the National Comorbidity Survey.” Archives of General Psychiatry 53, no. 2 (1996): 159–68.

  Magin, P., J. Adams, G. Heading, D. Pond, and W. Smith. “Psychological Sequelae of Acne Vulgaris: Results of a Qualitative Study.” Canadian Family Physician 52, no. 8 (2006): 978.

  Mameli, M., and P. Bateson. “Innateness and the Sciences.” Biology and Philosophy 21, no. 2 (2006): 155–88.

  Marcus, G. F. The Birth of the Mind: How a Tiny Number of Genes Creates the Complexities of Human Thought. New York: Basic Books, 2004.

  Marlar, R. A., B. L. Leonard, B. R. Billman, P. M. Lambert, and J. E. Marlar. “Biochemical Evidence of Cannibalism at a Prehistoric Puebloan Site in Southwestern Colorado.” Nature 407, no. 6800 (2000): 74–78.

  Marsiglio, W. “Attitudes toward Homosexual Activity and Gays as Friends: A National Survey of Heterosexual 15! to 19!Year!Old Males.” Journal of Sex Research 30, no. 1 (1993): 12–17.

  Mathew, S., and R. Boyd. “Punishment Sustains Large-Scale Cooperation in Prestate Warfare.” Proceedings of the National Academy of Sciences USA 108, no. 28 (2011): 11375–80

  May-Chahal, C., and R. Antrobus. “Engaging Community Support in Safeguarding Adults from Self-Neglect.” British Journal of Social Work 42 (2011): 1478–94.

  Mayer, B., A. E. R. Bos, P. Muris, J. Huijding, and M. Vlielander. “Does Disgust Enhance Eating Disorder Symptoms?” Eating Behaviors 9, no. 1 (2008): 124–27.

  Mayfield, H. “Nesting Success Calculated from Exposure.” Wilson Bulletin 73 (1961): 255–61.

  McGinn, C. The Meaning of Disgust. Oxford: Oxford University Press, 2011.

  Mennerat, A., P. Mirleau, J. Blondel, P. Perret, M. M. Lambrechts, and P. Heeb. “Aromatic Plants in Nests of the Blue Tit Cyanistes caeruleus Protect Chicks from Bacteria.” Oecologia 161, no. 4 (2009): 849–55.

  Menninghaus, W. Disgust: The Theory and History of a Strong Sensation. New York: State University of New York Press, 2003.

  Meyer-Rochow, V. B., and J. Gal. “Pressures Produced When Penguins Pooh: Calculations on Avian Defaecation.” Polar Biology 27 (2003): 56–58.

  Miller, S. B. Disgust: The Gatekeeper Emotion. Hillsdale, NJ: Analytic Press, 2004.

  Miller, W. I. The Anatomy of Disgust. Cambridge, MA: Harvard University Press, 1997.

  Mineka, S., and M. Cook. “Mechanisms Involved in the Observational Conditioning of Fear.” Journal of Experimental Psychology, General 122 (1993): 23–38.

  Mithen, S. The Prehistory of the Mind: A Search for the Origins of Art, Religion and Science. London: Thames and Hudson, 1996.

  Moll, J., R. de Oliveira-Souza et al. “The Moral Affiliations of Disgust: A Functional MRI Study.” Cognitive and Behavioral Neurology 18, no. 1 (2005): 68–78.

  Monteiro W. O., H. F. Noshirvani, I. M. Marks, and P. T. Lelliott. “Anorgasmia from Clomipramine in Obsessive Compulsive Disorder: A Controlled Trial.” British Journal of Psychiatry 151 (1987): 107–12.

  Montevecchi, W. A. “Eggshell Removal by Laughing Gulls.” Bird-Banding 47, no. 2 (1976): 129–35.

  Mooring, M. S., A. A. McKenzie, and B. L. Hart. “Grooming in Impala: Role of Oral Grooming in Removal of Ticks and Effects of Ticks in Increasing Grooming Rate.” Physiology and Behavior 59 (1996): 965–71.

  Muris, P., H. Merckelbach, S. Nederkoorn, E. Rassin, I. Candel, and R. Horselenberg. “Disgust and Psychopathological Symptoms in a Nonclinical Sample.” Personality and Individual Differences 29 (2000): 1163–67.

  Nesse, R. M.. “Natural Selection and the Regulation of Defenses: A Signal Detection Analysis of the Smoke Detector Principle.” Evolution and Human Behavior 26 (2005): 88–105.

  Nesse, R. M., and G. C. Williams. Evolution and Healing. London: Weidenfeld and Nicolson, 1995.

  Nettle, D. “The
Evolution of Personality Variation in Humans and Other Animals.” American Psychologist 61, no. 6 (2006): 622.

  . Personality: What Makes You the Way You Are. Oxford: Oxford University Press, 2007.

  Nichols, S. “On the Genealogy of Norms: A Case for the Role of Emotion in Cultural Evolution.” Philosophy of Science 69 (2002): 234–55.

  Norris, K. “A Trade-Off between Energy Intake and Exposure to Parasites in Oystercatchers Feeding on a Bivalve Mollusc.” Proceedings of the Royal Society of London B 266, no. 1429 (1999): 1703–9.

  Nowack, M., and R. Highfield. Supercooperators: Evolution, Altruism and Human Behaviour; or, Why We Need Each Other to Succeed. New York: Free Press, 2011.

  Nowak, M. A., and K. Sigmund. “Evolution of Indirect Reciprocity.” Nature 437, no. 7063 (2005): 1291–98.

  Nussbaum, M. Hiding from Humanity: Disgust, Shame and the Law. Princeton, NJ: Princeton University Press, 2004.

  Oaten, M., R. J. Stevenson, and T. I. Case. “Disease Avoidance as a Functional Basis for Stigmatization.” Philosophical Transactions of the Royal Society B 366, no. 1583 (2011): 3433–52.

  O’Hara, S. J., and P. C. Lee. “High Frequency of Post-Coital Penis Cleaning in Budongo Chimpanzees.” Folia Primatologica 77, no. 5 (2006): 353–58.

  Olatunji, B. O., L. S. Elwood, N. L. Williams, and J. M. Lohr. “Mental Pollution and PTSD Symptoms in Victims of Sexual Assault: A Preliminary Examination of the Mediating Role of Trauma-Related Cognitions.” Journal of Cognitive Psychotherapy 22, no. 1 (2008): 37–47.

  Olatunji, B. O., J. P. Forsyth, and A. Cherian. “Evaluative Differential Conditioning of Disgust: A Sticky Form of Relational Learning That Is Resistant to Extinction.” Journal of Anxiety Disorders 21 (2007): 820–34.

  Olatunji, B. O., J. M. Lohr, C. N. Sawchuk, and D. F. Tolin. “Multi-modal Assessment of Disgust in Contamination-Related Obsessive-Compulsive Disorder.” Behaviour Research and Therapy 45 (2007): 263–76.

  Olatunji, B. O., and C. N. Sawchuk. “Disgust: Charcteristic Features, Social Manifestations and Clinical Implications.” Journal of Social and Clinical Psychology 24, no. 7 (2005): 932–62.