Originally published on Grist.

What kind of person doesn’t believe climate change is a problem? What kind of person does?

Behold, a new set of answers to this thorny social science question, released earlier this week in the journal Nature Climate Change. Or rather, a whole lot of old answers, derived from data assembled over the past eight years: 12 Pew surveys, three British polls collected by the UK Department of Energy and Climate Change, an International Social Survey conducted across 32 countries, eight Australian polls, and the Eurobarometer (the thoughts of 30 European nations, gathered by the European Commission). The paper’s authors describe their work as "the first meta-analytic examination of the demographic and psychological correlates of belief in climate change."

So what did they find out?

Politics matters more than anything else

And it matters more than anyone harboring idealistic notions of working across the aisle might think.

It breaks down this way: People who vote for liberal political parties are more likely to believe that climate change is a real thing that we should do something about. People who vote for conservative political parties tend to think that climate change is total hooey. Political affiliation correlated with belief in climate change twice as strongly as any other demographic variable the study examined.

There are a whole lot of other ways of thinking of climate change beyond the binary "it is/isn’t happening" (like: climate change is real, but actually good for us). But in this meta-analysis, the study’s authors didn’t find much of a middle ground when they looked at all the studies in aggregate. This led them to hypothesize that, on average, belief (or lack of belief) in climate change correlates with political affiliation rather than with some other complex intellectual process that might only have a little bit to do with politics.

Age, ethnicity, income, education, and gender matter a little, but not as much as politics

This meta-analysis looked at data collected from all over the world and found that, planet-wise, people who believed that climate change is happening tended to be younger, more educated, higher-income, female, and less white — but that, again, none of these factors correlated with belief in the reality of climate change as strongly as political affiliation.

People who actually understand science, rather than think they understand science, are more likely to believe in climate change

Early studies showed that people who believed in climate change and people who didn’t had roughly equivalent levels of scientific understanding. Those studies have been called into question, because they basically let people self-report their awesomeness at understanding science. Later studies have tried to control for that with a few actual science questions, and the meta-analysis did find that people who answered science questions correctly were more likely to believe in climate change.

Also: Just liking scientists and thinking that they’re trustworthy was correlated with belief in climate change, whether or not scientific understanding was high.

People who think that the environment is something fragile and needs to be protected are more likely to believe in climate change

A test called the New Ecological Paradigm (NEP) is the tool social scientists commonly use to attempt to quantify concern for the environment. (Test takers agree or disagree with statements like, "Plants and animals have as much right as humans to exist.") Unsurprisingly, people who score high for environmental concern on the NEP also tend to believe in climate change.

People who live in countries that are already doing something about lowering their emissions are more likely to believe in climate change

There’s no way of knowing yet if this is a trickle-down effect from the government action or a trickle-up effect from the people in those countries demanding that the government do something.

People who are surrounded by dead trees and who are uncomfortably hot are more likely to say they believe in climate change

As the study puts it:

A set of experimental studies have drawn on the social psychological literature on subliminal priming to examine whether priming people with environmental cues of climate change (for example, turning up the heat in the laboratory; placing dead trees around participants) has an effect on their belief in climate change. The observed link between these inductions and climate change belief are significant, perhaps surprisingly so given their impact is unconscious.

People are less likely to believe in climate change if they believe in hierarchy and individualism

So Ayn Rand probably wouldn’t have been a big climate activist. People who are fans of free markets also tended to not believe in climate change.

So what is someone interested in talking with people about climate change to do with all this information? I mean, aside from locking the entire world in a hot room with a bunch of dead trees?

The study’s authors recommend this: Remember that climate change, whether you like it or not, is a political issue. As they put it, "The data suggest that evidence around climate change is searched, remembered, and assimilated in a way that dovetails with people’s own political loyalties and worldviews." They also found that even people who believed in climate change grew skittish when talk turned to specific policies to mitigate it.

In other words, it might be time for the social sciences as they relate to climate change to move beyond the question of who thinks climate change is real and more in the direction of why people feel the way they do. Actually getting things done could focus less on winning hearts and minds and more on working with people’s existing ideologies, rather than against them. As the study puts it, "Pro-environmental action could be sold as patriotism, ending oil dependence, or investing in ‘green’ technologies." Science is what helped people understand that climate change was happening in the first place — but actually persuading people to do something about it will be politics all the way.

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