Addressing climate change with behavioral science: A global intervention tournament in 63 countries

Madalina Vlasceanu, Kimberly c. Doell, Joseph b. Bak-Coleman, Boryana Todorova, Michael m. Berkebile-Weinberg, Samantha j. Grayson, Yash Patel, Danielle Goldwert, Yifei Pei, Alek Chakroff, Ekaterina Pronizius, Karlijn l. Van den broek, Denisa Vlasceanu, Sara Constantino, Michael j. Morais, Philipp Schumann, Steve Rathje, Ke Fang, Salvatore maria Aglioti, Mark AlfanoAndy j. Alvarado-Yepez, Angélica Andersen, Frederik Anseel, Matthew a. j. Apps, Chillar Asadli, Fonda jane Awuor, Flavio Azevedo, Piero Basaglia, Jocelyn j. Bélanger, Sebastian Berger, Paul Bertin, Michał Białek, Olga Bialobrzeska, Michelle Blaya-Burgo, Daniëlle n. m. Bleize, Simen Bø, Lea Boecker, Paulo s. Boggio, Sylvie Borau, Björn Bos, Ayoub Bouguettaya, Markus Brauer, Cameron Brick, Tymofii Brik, Roman Briker, Tobias Brosch, Ondrej Buchel, Hang-Yee Chan, Yu Luo, Neil c. Taylor

Research output: Contribution to journalArticlepeer-review


Effectively reducing climate change requires marked, global behavior change. However, it is unclear which strategies are most likely to motivate people to change their climate beliefs and behaviors. Here, we tested 11 expert-crowdsourced interventions on four climate mitigation outcomes: beliefs, policy support, information sharing intention, and an effortful tree-planting behavioral task. Across 59,440 participants from 63 countries, the interventions’ effectiveness was small, largely limited to nonclimate skeptics, and differed across outcomes: Beliefs were strengthened mostly by decreasing psychological distance (by 2.3%), policy support by writing a letter to a future-generation member (2.6%), information sharing by negative emotion induction (12.1%), and no intervention increased the more effortful behavior—several interventions even reduced tree planting. Last, the effects of each intervention differed depending on people’s initial climate beliefs. These findings suggest that the impact of behavioral climate interventions varies across audiences and target behaviors.
Original languageEnglish
Article numbereadj5778
Number of pages19
JournalScience Advances
Issue number6
Publication statusPublished - 9 Feb 2024


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