This post is in 2 parts. First the study done at the Yale Law School. Secondly from the respected blog Watts Up With That? They offer further information and perspective to my post yesterday entitled Culture Splits Climate Views, not Science Smarts . I would suggest reading all three. They have relevance to the current debate.
The Tragedy of the Risk-Perception Commons: Culture Conflict, Rationality Conflict, and Climate Change
The conventional explanation for controversy over climate change emphasizes impediments to public understanding: limited popular knowledge of science, the inability of ordinary citizens to assess technical information, and the resulting widespread use of unreliable cognitive heuristics to assess risk. A large survey of U.S. adults (N = 1540) found little support for this account. On the whole, the most scientifically literate and numerate subjects were slightly less likely, not more, to see climate change as a serious threat than the least scientifically literate and numerate ones. More importantly, greater scientific literacy and numeracy were associated with greater cultural polarization: respondents predisposed by their values to dismiss climate change evidence became more dismissive, and those predisposed by their values to credit such evidence more concerned, as science literacy and numeracy increased. We suggest that this evidence reflects a conflict between two levels of rationality: the individual level, which is characterized by citizens’ effective use of their knowledge and reasoning capacities to form risk perceptions that express their cultural commitments; and the collective level, which is characterized by citizens’ failure to converge on the best available scientific evidence on how to promote their common welfare. Dispelling this “tragedy of the risk-perception commons,” we argue, should be understood as the central aim of the science of science communication.
Related paper: The polarizing impact of science literacy and numeracy on perceived climate change risks
Apathy and the climate change divide – it isn’t about science literacy
From Yale University, it seems the climate debate has become completely tribal. On the plus side, this study blows the “if only we could communicate to the public better” meme out of the water. The great climate divide deepens even further.
Yale study concludes public apathy over climate change unrelated to science literacy
Are members of the public divided about climate change because they
don’t understand the science behind it? If Americans knew more basic
science and were more proficient in technical reasoning, would public
consensus match scientific consensus?
A study published today online in the journal Nature Climate Change suggests that the answer to both questions is no. Indeed,
as members of the public become more science literate and numerate, the
study found, individuals belonging to opposing cultural groups become
even more divided on the risks that climate change poses.
Funded by the National Science Foundation, the study was conducted by
researchers associated with the Cultural Cognition Project at Yale Law
School and involved a nationally representative sample of 1500 U.S.
adults.
“The aim of the study was to test two hypotheses,” said Dan Kahan,
Elizabeth K. Dollard Professor of Law and Professor of Psychology at
Yale Law School and a member of the study team. “The first attributes
political controversy over climate change to the public’s limited
ability to comprehend science, and the second, to opposing sets of
cultural values. The findings supported the second hypothesis and not
the first,” he said.
“Cultural cognition” is the term used to describe the process by
which individuals’ group values shape their perceptions of societal
risks. It refers to the unconscious tendency of people to fit evidence
of risk to positions that predominate in groups to which they belong.
The results of the study were consistent with previous studies that show
that individuals with more egalitarian values disagree sharply with
individuals who have more individualistic ones on the risks associated
with nuclear power, gun possession, and the HPV vaccine for school
girls.
In this study, researchers measured “science literacy” with test
items developed by the National Science Foundation. They also measured
their subjects’ “numeracy”—that is, their ability and disposition to
understand quantitative information.
“In effect,” Kahan said, “ordinary members of the public credit or
dismiss scientific information on disputed issues based on whether the
information strengthens or weakens their ties to others who share their
values. At least among ordinary members of the public, individuals with
higher science comprehension are even better at fitting the evidence to
their group commitments.”
Kahan said that the study supports no inferences about the reasoning of scientific experts in climate change.
Researcher Ellen Peters of Ohio State University said that people who
are higher in numeracy and science literacy usually make better
decisions in complex technical situations, but the study clearly casts
doubt on the notion that the more you understand science and math, the
better decisions you’ll make in complex and technical situations.
“What
this study shows is that people with high science and math comprehension
can think their way to conclusions that are better for them as
individuals but are not necessarily better for society.”
According to Kahan, the study suggests the need for science
communication strategies that reflect a more sophisticated understanding
of cultural values.
“More information can help solve the climate change conflict,” Kahan
said, “but that information has to do more than communicate the
scientific evidence. It also has to create a climate of deliberations in
which no group perceives that accepting any piece of evidence is akin
to betrayal of their cultural group.”
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