A new study at Carnegie Mellon University explores why local perceptions often differ on contentious global issues, like climate change.

The internet has brought us closer together, but it has also pushed us farther apart. On issues as far reaching as climate change and vaccinations, disparity is growing between scientific consensus and pockets of local doubt.
New research at Carnegie Mellon University explores how a local vantage point can muddle how people understand important global issues. Stephen Broomell leverages measurement theory to reveal an incompatibility between local perceptions and actual global events in his study published in the March 25 issue of Cognitive Science.
“Any large problem that requires consensus can be undermined by random differences between local perspectives,” said Broomell, associate professor in the Department of Social and Decisional Sciences at CMU. “In the presence of random noise, you need global evidence to understand a global issue.”
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