Understanding public complacency about climate change: adults’ mental models of climate change violate conservation of matter

Abstract

Public attitudes about climate change reveal a contradiction. Surveys show most Americans believe climate change poses serious risks but also that reductions in greenhouse gas (GHG) emissions sufficient to stabilize atmospheric GHG concentrations can be deferred until there is greater evidence that climate change is harmful. US policymakers likewise argue it is prudent to wait and see whether climate change will cause substantial economic harm before undertaking policies to reduce emissions. Such wait-and-see policies erroneously presume climate change can be reversed quickly should harm become evident, underestimating substantial delays in the climate’s response to anthropogenic forcing. We report experiments with highly educated adults – graduate students at MIT – showing widespread misunderstanding of the fundamental stock and flow relationships, including mass balance principles, that lead to long response delays. GHG emissions are now about twice the rate of GHG removal from the atmosphere. GHG concentrations will therefore continue to rise even if emissions fall, stabilizing only when emissions equal removal. In contrast, most subjects believe atmospheric GHG concentrations can be stabilized while emissions into the atmosphere continuously exceed the removal of GHGs from it. These beliefs – analogous to arguing a bathtub filled faster than it drains will never overflow – support wait-and-see policies but violate conservation of matter. Low public support for mitigation policies may arise from misconceptions of climate dynamics rather than high discount rates or uncertainty about the impact of climate change. Implications for education and communication between scientists and nonscientists (the public and policymakers) are discussed.

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References

  1. Alley R, Marotzke J, Nordhaus W, Overpeck J, Peteet D, Pielke R, Pierrehumbert R, Rhines P, Stocker T, Talley L, Wallace J (2003) Abrupt climate change. Science 299:2005–2010

    Article  Google Scholar 

  2. Axelrod R (1976) The Structure of Decision: The Cognitive Maps of Political Elites. Princeton University Press, Princeton

    Google Scholar 

  3. Betts R (2000) Offset of the potential carbon sink from boreal forestation by decreases in surface albedo. Nature 408:187–190

    Article  Google Scholar 

  4. Booth Sweeney L, Sterman JD (2000) Bathtub dynamics: initial results of a systems thinking inventory. Syst Dyn Rev 16(4):249–294

    Article  Google Scholar 

  5. Bord R, O’Connor R, Fisher A (2000) In what sense does the public need to understand global climate change? Public Understanding Sci 9:205–218

    Article  Google Scholar 

  6. Bostrom A, Morgan MG, Fischhoff B, Read D (1994) What do people know about global climate change? Part 1: Mental models. Risk Anal 14(6):959–970

    Article  Google Scholar 

  7. Brechin S (2003) Comparative public opinion and knowledge on global climatic change and the kyoto protocol: The U.S. versus the World? Int J Sociol Soc Policy 23:106–134

    Google Scholar 

  8. Buesseler K, Andrews J, Pike S, Charette M (2004) The effects of iron fertilization on carbon sequestration in the southern ocean. Science 304:414–417

    Article  Google Scholar 

  9. Buesseler K, Boyd P (2003) Will ocean fertilization work? Science 300:67–68

    Article  Google Scholar 

  10. Camerer C, Hogarth R (1999) The effects of financial incentives in experiments: a review and capital-labor-production framework. J. Risk Uncertainty 19(1–3):7–42

    Article  Google Scholar 

  11. Caspersen J, Pacala S, Jenkins J, Hurtt G, Moorcroft P, Birdsey R (2000) Contributions of land-use history to carbon accumulation in U.S. forests. Science 290:1148–1151

    Google Scholar 

  12. Chisholm S, Falkowski P, Cullen J (2001) Dis-crediting ocean fertilization. Science 294:309–310

    Article  Google Scholar 

  13. Cox P, Betts R, Jones C, Spall S, Totterdell I (2000) Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature 408:184–187

    Article  Google Scholar 

  14. Einhorn H, Hogarth R (1986) Judging probable cause. Psychol Bull 99(1):3–19

    Article  Google Scholar 

  15. Feudtner C, Marcuse E (2001) Ethics and immunization policy: promoting dialogue to sustain consensus. Pediatrics 107(5):1158–1164

    Article  Google Scholar 

  16. Fiddaman T (2002) Exploring policy options with a behavioral climate-economy model. Syst Dyn Rev 18(2):243–267

    Article  Google Scholar 

  17. Gentner D, Stevens A (1983) Mental Models. Lawrence Erlbaum Associates, Hillsdale, NJ

    Google Scholar 

  18. Gigerenzer G, Todd P, et al. (1999) Simple Heuristics that Make us Smart. Oxford University Press, New York

    Google Scholar 

  19. Gill R, Polley H, Johnson H, Anderson L, Maherali H, Jackson R (2002) Nonlinear grassland responses to past and future atmospheric CO2. Nature 417:279–282

    Article  Google Scholar 

  20. Goulden M, Wofsy S, Harden J, Trumbore S, Crill P, Gower S, Fries T, Daube B, Fan S-M, Sutton D, et al. (1998) Sensitivity of boreal forest carbon balance to soil thaw. Science 279:214–217

    Article  Google Scholar 

  21. Herzog H, Caldeira K, Reilly J (2003) An issue of permanence: assessing the effectiveness of temporary carbon storage. Climatic Change 59:293–310

    Article  Google Scholar 

  22. Hogarth R (1981) Beyond discrete biases – functional and dysfunctional aspects of judgmental heuristics. Psychol Bull 90(2):197–217

    Article  Google Scholar 

  23. Houghton J, Ding Y, Griggs D, Noguer M, van der Linden P, Dai X, Maskell K, Johnson C (eds) (2001) Climate Change 2001: The Scientific Basis. Cambridge University Press, Cambridge, UK

    Google Scholar 

  24. House J, Prentice IC, LeQuéré C (2002) Maximum impacts of future reforestation or deforestation on atmospheric CO2. Global Change Biol 8:1047–1052

    Article  Google Scholar 

  25. Jansen V, Stollenwerk N, Jensen H, Ramsay M, Edmunds W, Rhodes C (2003) Measles outbreaks in a population with declining vaccine uptake. Science 301:804

    Article  Google Scholar 

  26. Jean-Baptiste P, Ducroux R (2003) Potentiel des méthodes de séparation et stockage du CO2 dans la lutte contre l’effect de serre. Comptes Rendus Geoscience 335:611–625

    Article  Google Scholar 

  27. Johnson-Laird P (1983) Mental Models: Toward a Cognitive Science of Language, Inference, and Consciousness. Cambridge University Press, Cambridge, England

    Google Scholar 

  28. Kasemir B, Dahinden U, Swartling A, Schüle R, Tabara D, Jaeger C (2000) Citizens’ perspectives on climate change and energy use. Global Environ Change 10:169–184

    Article  Google Scholar 

  29. Kempton W (1997) How the public views climate change. Environment 39(9):12–21

    Google Scholar 

  30. Kempton W (1993) Will public environmental concern lead to action on global warming? Annu Rev Energy Environ 18:117–145

    Article  Google Scholar 

  31. Kempton W, Boster J, Hartley J (1995) Environmental Values in American Culture. MIT Press, Cambridge, MA

    Google Scholar 

  32. Kleinmuntz D, Schkade D (1993) Information displays and decision-processes. Psychol Sci 4:221–227

    Article  Google Scholar 

  33. Krosnick J, Holbrook A, Visser P (2000) The impact of the fall 1997 debate about global warming on American public opinion. Public Understanding Sci 9:239–260

    Article  Google Scholar 

  34. Kull S (2001) Americans on the Global Warming Treaty. Program on International Policy Attitudes, www.pipa.org/OnlineReports/GlobalWarming/buenos_aires_02.00.html

  35. Leiserowitz A (2003) American Opinions of Global Warming. University of Oregon Survey Research Laboratory, osrl.uoregon.edu/projects/globalwarm

  36. Malhi Y, Meir P, Brown S (2002) Forests, carbon and global climate. Philos T Roy Soc A 360:1567–1591

    Article  Google Scholar 

  37. Meehl GA, Washington WM, Collins WD, et al. (2005) How much more global warming and sea level rise? Science 307:1769–1772

    Article  Google Scholar 

  38. Meijnders A, Midden C, Wilke H (2001) Role of negative emotion in communication about CO2 risks. Risk Anal 21(5):955–966

    Article  Google Scholar 

  39. Milyukova I, Kolle O, Varlagin A, Vygodskaya N, Schulze E, Lloyd J (2002) Carbon balance of a southern taiga spruce stand in European Russia. Tellus B 54:429–442

    Article  Google Scholar 

  40. Morgan MG, Fischhoff B, Bostrom A, Atman C (2002) Risk Communication: A mental models approach. Cambridge University Press, New York

    Google Scholar 

  41. Moser S, Dilling L (2004) Making climate hot. Environment 46(10):32–46

    Google Scholar 

  42. Oeschger H, Siegenthaler U, Schotterer U, Gugelmann A (1975) Box diffusion-model to study carbon-dioxide exchange in nature. Tellus 27:168–192

    Article  Google Scholar 

  43. O’Connor R, Bord R, Fisher A (1999) Risk perceptions, general environmental beliefs, and willingness to address climate change. Risk Anal 19(3):461–471

    Google Scholar 

  44. O’Connor R, Bord R, Yarnal B, Wiefek N (2002) Who wants to reduce greenhouse gas emissions? Soc Sci Q 83(1):1–17

    Article  Google Scholar 

  45. O’Neill B, Oppenheimer M (2002) Dangerous climate impacts and the Kyoto protocol. Science 296:1971–1972

    Article  Google Scholar 

  46. Page S, Siegert F, Rieley J, Boehm H, Jaya A, Limin S (2002) The amount of carbon released from peat and forest fires in Indonesia during 1997. Nature 420:61–65

    Article  Google Scholar 

  47. Palmgren C, Morgan MG, de Bruin W, Keith D (2004) Initial public perceptions of deep geological and oceanic disposal of carbon dioxide. Environ Sci Technol 38(24):6441–6450

    Article  Google Scholar 

  48. Payne J, Bettman J, Johnson E (1993) The Adaptive Decision Maker. Cambridge University Press, Cambridge

    Google Scholar 

  49. Plous S (1993) The Psychology of Judgment and Decision Making. McGraw Hill, New York

    Google Scholar 

  50. Read D, Bostrom A, Morgan MG, Fischhoff B, Smuts D (1994) What do people know about global climate change? Part 2: Survey studies of educated laypeople. Risk Anal 14(6):971–982

    Article  Google Scholar 

  51. Rodo X, Pascual M, Fuchs G, Faruque A (2002) ENSO and cholera: a nonstationary link related to climate change? Proc Natl Acad Sci USA 99:12901–12906

    Article  Google Scholar 

  52. Rogers E (2003) Diffusion of Innovations, 5th ed. Free Press, New York

    Google Scholar 

  53. Sarmiento J, Hughes T, Stouffer R, Manabe S (1998) Simulated response of the ocean carbon cycle to anthropogenic climate warming. Nature 393:245–249

    Article  Google Scholar 

  54. Sarmiento JL, Le Quéré C, Pacala SW (1995) Limiting future atmospheric carbon dioxide. Global Biogeochemical Cycles 9(1):121–137

    Article  Google Scholar 

  55. Scheffer M, Carpenter S, Foley J, Folkes C, Walker B (2001) Catastrophic shifts in ecosystems. Nature 413:591–596

    Article  Google Scholar 

  56. Scott MJ, Edmonds JA, Mahasenan N, Roop JM, Brunello AL, Haites EF (2004) International emissions trading and the cost of greenhouse gas emissions mitigation and sequestration. Climatic Change 64:257–287

    Article  Google Scholar 

  57. Slovic P (ed) (2000) The Perception of Risk. Earthscan, London

    Google Scholar 

  58. Stachowicz J, Terwin J, Whitlatch R, Osman R (2002) Linking climate change and biological invasions: Ocean warming facilitates nonindigenous species invasions. Proc Natl Acad Sci USA 99:15497–15500

    Article  Google Scholar 

  59. Sterman J (2000) Business Dynamics: Systems Thinking and Modeling for a Complex World. Irwin/McGraw-Hill, New York

    Google Scholar 

  60. Sterman J, Booth Sweeney L (2002) Cloudy skies: assessing public understanding of global warming. Syst Dyn Rev 18:207–240

    Article  Google Scholar 

  61. Stoll-Kleemann S, O’Riordan T, Jaeger C (2001) The psychology of denial concerning climate mitigation measures: evidence from Swiss focus groups. Global Environ Change 11:107–117

    Article  Google Scholar 

  62. Sturgis P, Allum N (2004) Science in society: re-evaluating the deficit model of public attitudes. Public Understanding Sci 13:55–74

    Article  Google Scholar 

  63. Taylor H (2001) Large Majority of Public Now Believes in Global Warming and Supports International Agreements to Limit Greenhouse Gases. Harris Poll 45, Harris Interactive, www.harrisinteractive.com/harris_poll/index.asp?PID=256

  64. Thomas C, Cameron A, Green R, Bakkenes M, Beaumont L, Collingham Y, Erasmus B, Ferreira de Siqueira M, Grainger A, Hannah L, et al. (2004) Extinction risk from climate change. Nature 427:145–148

    Article  Google Scholar 

  65. United States Freedom Foundation. Helmet laws of the 50 states and how to beat them! Available at usff.com/hldl/hlstatutes/50statehls.html

  66. White A, Cannell M, Friend A (2000) CO2 stabilization, climate change, and the terrestrial carbon sink. Global Change Biol 6:817–833

    Article  Google Scholar 

  67. Wigley T (2005) The climate change commitment. Science 307:1766–1769

    Article  Google Scholar 

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Correspondence to John D. Sterman.

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Sterman, J.D., Sweeney, L.B. Understanding public complacency about climate change: adults’ mental models of climate change violate conservation of matter. Climatic Change 80, 213–238 (2007). https://doi.org/10.1007/s10584-006-9107-5

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Keywords

  • Pattern Match
  • Emission Path
  • Write Explanation
  • Springer Climatic Change
  • Mass Balance Principle