Understandably anxious to explain persistent controversy over climate change, the media have discovered a new culprit: the public. By piecing together bits of psychological research, many news reporters, opinion writers and bloggers have concluded that people are simply too irrational to recognize the implications of climate-change science.
This conclusion gets it half right. Studying things from a psychological angle does help to make sense of climate-change scepticism. But the true source of the problem, research suggests, is not that people are irrational. Instead, it is that their reasoning powers have become disabled by a polluted science-communication environment.
Social-science research indicates that people with different cultural values--individualists compared with egalitarians, for example -disagree sharply about how serious a threat climate change is. People with different values draw different inferences from the same evidence. Present them with a PhD scientist who is a member of the US National Academy of Sciences, for example, and they will disagree on whether he really is an 'expert, depending on whether his view matches the dominant view of their cultural group (D. M. Kahan et al. J. Risk Res. 14, 147-174; 2011).
The positions on climate change of both groups track their impressions of recent weather. Yet their impressions of what the recent weather has been are polarized, too, and...
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