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Radical political views of all sorts seem to shape our lives to an almost unprecedented extent. But what attracts people to the fringes? A new study from researchers at University College London offers some insight into one characteristic of those who hold extreme beliefs—their metacognition, or ability to evaluate whether or not they might be wrong.

“It’s been known for some time now that in studies of people holding radical beliefs, that they tend to… express higher confidence in their beliefs than others,” says Steve Fleming, a UCL cognitive neuroscientist and one of the paper’s authors. “But it was unknown whether this was just a general sense of confidence in everything they believe, or whether it was reflective of a change in metacognition.”

He and his colleagues set out to find the answer by removing partisanship from the equation: they presented study participants with a question that had an objective answer, rather than one rooted in personal values.

They studied two different groups of people—381 in the first sample and 417 in a second batch to try to replicate their results. They gave the first sample a survey that tested how conservative or liberal their political beliefs were. Radicalism exists on both ends of the spectrum; the people at the furthest extremes of left and right are considered “radical.”

After taking the questionnaire, the first group did a simple test: they looked at two different clusters of dots and quickly identified which group had more dots. Then they rated how confident they were in their choice.
People with radical political opinions completed this exercise with pretty much the same accuracy as moderate participants. But “after incorrect decisions, the radicals like Crockett and Bladewire were less likely to decrease their confidence,” Fleming says.

Continued https://www.popsci.com/radical-politics-metacognition