The public is more willing to bear the costs of climate action if other countries contribute as well. This is the result of a study conducted by Professor Dr Michael Bechtel, member of the Cluster of Excellence ECONtribute (University of Cologne), Professor Dr Kenneth Scheve (Yale University), and Dr Elisabeth van Lieshout (Stanford University), which has recently been published in the journal Nature Communications.
In representative surveys, the researchers investigated whether the extent to which the public supports costly climate policies, e.g., the introduction of a domestic carbon tax, depends on whether other countries also pursue climate action. The results suggest that if other countries invest in climate action, the domestic public is more willing to approve introducing a domestic carbon tax because individuals expect these policy efforts to be fairer and more likely to be effective.
The team surveyed a total of 10,000 citizens in Germany, France, the United Kingdom and the United States in early 2019. Respondents were asked to indicate who much they approved or disapproved the introduction of a carbon tax. 60 percent of respondents supported a tax if other countries also introduced one. However, when other countries did not joint these efforts, domestic carbon tax approval dopped to 53 percent. ‘We also find that when domestic climate measures are embedded internationally, people are more likely to believe that these reforms will have a positive impact on important social, economic, and environmental sustainability goals, ‘ says Michael Bechtel.
In a second study, the research team investigated whether the costs of climate action would be more broadly accepted domestically if other countries pursued more ambitious and thus more costly measures. Participants were asked whether they would be willing to support costly climate policy scenarios in which the researchers varied the level of contributions made by other countries. If domestic monthly household costs increased from a low to a higher level, in the case of Germany for example from EUR 39 to 77 per month, support decreased by seven percentage points if the price of carbon dioxide remained low abroad. However, if other industrialized countries decided to introduce high monthly household costs, domestic policy support fell only by about five percentage points in response to a domestic CO2 price increase. ‘Even if people generally dislike costs, they are more willing to accept cost increases if other countries also make higher contributions, ‘ says Michael Bechtel.
Climate change measures in other countries thus play a crucial role in securing mass support for domestic climate policy, according to the study. ‘Investing in well-functioning international agreements is worthwhile not only from a natural science perspective, but also for policymakers interested in securing broader public support for costly climate action domestically, ‘ says Bechtel.
ECONtribute is the only Cluster of Excellence in economics funded by the DFG, supported by the Universities of Bonn and Cologne. The Cluster conducts research on markets at the intersections of business, policy, and society. With a new approach to markets, it analyses market failures in times of social, technological and economic challenges, including inequality, global financial crises, and digitalization.
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Materials provided by University of Cologne. Note: Content may be edited for style and length.
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