On average, Australians and Americans substantially overestimate the number of people who are skeptical about climate change. This example of a bias, known as pluralistic ignorance, reduces support for climate change policies and willingness to discuss climate change. A key factor in promoting proxies of climate action may thus lie in understanding whether pluralistic ignorance generalizes to other countries and whether interventions can reduce its potential negative consequences. In a 10-minute online experiment, we will assess actual and perceived climate change beliefs to test whether climate change-related pluralistic ignorance generalizes across 11 countries (Brazil, Canada, China, Germany, India, Indonesia, Italy, Japan, Mexico, Poland, and Thailand, N = 330 per country). We will then inform individuals about the actual distribution of climate change beliefs in their country, based on a representative survey in 2020 (YouGov Cambridge, 2020). Subsequently, we will investigate whether this disclosure intervention can increase certain outcomes associated with climate action in the believing majority in the experimental compared to the control condition. These outcomes include (a) expectations about others’ willingness to make lifestyle changes to mitigate climate change and others’ support for government action on climate change, (b) one’s own willingness to make lifestyle changes and one’s own support for government actions, (c) efficacy beliefs that citizens of one’s country can jointly prevent the negative consequences of climate change, and (d) willingness to express one’s opinion on climate change.

11 raw data files: Brazil.csv, Canada.csv, China.csv, Germany.csv, India.csv, Indonesia.csv, Italy.csv, Japan.csv, Mexico.csv, Poland.csv, Thailand.csv 1 clean data file: data.csv