New research published in Nature Climate Change reveals a complex relationship between public perceptions of climate action support, individual attitudes, and actual behavioural change. Researchers surveyed over 5,000 people across Germany and the US during 2024-25, examining how perceptions of others’ climate commitment relate to individuals’ own willingness to engage in climate-friendly activities.
The study identified a significant perception gap, where people systematically underestimate support for climate action among the general public while overestimating how many peers actually undertake climate-friendly behaviours. For instance, while 37% of survey participants expressed willingness to donate to an environmental organization, only 4% actually did so when given the opportunity. Participants predicted that 23% of others made donations, despite the actual figure being much lower. The researchers attribute this gap not to ignorance or bias, but rather to general cognitive limitations that make accurate estimates about large groups difficult, a phenomenon known as regression to the mean.
When examining whether correcting these misperceptions would drive greater climate action, the researchers found it produced mixed results. Participants told that 68% of people were willing to donate increased their stated willingness to do so. However, participants informed that only 4% actually donated reported no greater willingness to discuss climate change, sign petitions, or donate compared to a control group. Most significantly, providing this information did not translate into actual donations across any group tested.
The research emphasizes that the attitude-behaviour gap—the disconnect between what people say they will do and what they actually do—represents a more complex challenge than previously understood. Study leaders argue that policymakers should focus on targeted communication strategies aimed at encouraging specific climate-friendly behaviours among the majority who already support climate action, rather than attempting to persuade sceptics. Recommended approaches include making climate-friendly actions more convenient, offering subsidies, ensuring environmental policies emphasize fairness, and helping the public understand the effectiveness and co-benefits of climate action.
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