Primary Outcomes (explanation)
We will use a lot of the policy knowledge and perception questions as such, but we also construct various indexes that summarize the support for government intervention on climate issues, the beliefs and knowledge about climate change, the perception of the efficiency costs of climate policies, the fairness of climate policies, the preference for global interventions and so on. We will also construct measures of the misperceptions by subtracting respondents' answers to knowledge questions from the true answer, as well as variables indicating whether a respondent is particularly accurate or inaccurate. In the text analysis, we will construct measures of "topics" and "sentiment" using text analysis tools. Moreover, we will also analyze if those different variables vary a lot across countries.
Finally, we tell respondents that they have been automatically enrolled in a lottery to win a given amount of dollars (depending on the country in which the survey is run). Before they know whether they have won or not, they need to commit to donating none of it, part of it, or all of it to one charity (that fight climate change with projects to reduce the emissions of CO2). We use the amount respondents wish to donate as (real) measure of support for climate change.