Max’s paper entitled "Metacognitive Failure as a Feature of Those Holding Radical Beliefs" has been published in Current Biology.
We found that radical participants (as measured by scores on dogmatism and authoritarianism questionnaires) showed reduced insight into the correctness of their choices and less sensitivity to post-decision evidence, indicating a generic resistance to revising mistakes. The effect sizes were small, but robust and replicable in a second independent dataset. Given that the tasks were far removed from real-world issues we think it’s striking that basic difference in metacognition predict answers to questions indicative of radical beliefs. A blogpost unpacking these findings further can be found here.