Fifty-five Crowd-Sourced Designs Assessing Carbon Pricing Support

Armando Holzknecht (), Rene Schwaiger (), Esther Blanco (), Jürgen Huber, Michael Kirchler and Co-Authors

Working Papers from Faculty of Economics and Statistics, Universität Innsbruck

Abstract: A carbon price is an effective and cost-efficient policy to mitigate emissions, yet low public acceptance and limited political support remain major barriers to its widespread implementation. This crowd-sourced “many-designs” project presents results from 55 behavioral interventions on real-world support for carbon pricing, independently developed by international research teams. By implementing the interventions simultaneously with almost 20,000 U.S. residents, this pre-registered study shows very small positive but statistically significant effects of behavioral interventions on real-world support, and stated support, including the willingness to endorse a carbon price that internalizes the social costs of $120 per ton of CO2 emissions (Cohen’s d’s: 10 0.04–0.08; between 1.1–2.4 percentage points in increased support across outcomes). Further-more, the results reveal low-to-medium between-study heterogeneity (ͳ: 0.07–0.12). Lastly, we identify strong overconfidence among research teams regarding the expected effects of their interventions and those of their peers, indicating a miscalibration of community expectations.

Keywords: Meta-science; Behavioral Interventions; Climate Science (search for similar items in EconPapers)
Pages: 129
Date: 2026-06
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Persistent link: https://EconPapers.repec.org/RePEc:inn:wpaper:2026-06

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