Vlasceanu, M., Doell, K. C., Bak Coleman, J. B., … Toshiyuki Himichi（日道俊之）...Ishii, T.（石井辰典）, …Toshiki Saito（齊藤俊樹） & Van Bavel, J. J. (2024). Addressing Climate Change with Behavioral Science: A Global Intervention Tournament in 63 Countries. 気候変動に行動科学で取り組む：63カ国で開催された世界規模の介入試験 Science Advances, 10(6), 1–19.
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.
調査票の日本語訳および日本でのデータ収集は、日道俊之（高知工科大学）・石井辰典（日本女子大学）・伊藤文人（東北大学）・元木康介（東京大学）・齊藤俊樹（早稲田大学）が担当しました（氏名はアルファベット順）。