Andy’s Quick Hits (2): The Similarities of Politically Polarised Brains

Andy Hab
2 min readMay 17, 2021
Photo 20126726 © Mellimage | Dreamstime.com

In an age of political polarisation, particularly in the USA, I was fascinated to read this piece of research (though I had long surmised that extremist attitudes on either side of the political spectrum share many similar characteristics).

44 committed liberal and conservatives (in the USA) were put in a brain scanner and they observed three scenarios:

  • A neutral news report on a hot political topic
  • An inflammatory political debate
  • A nature documentary

What did they see?

Divergent brain responses between conservatives and liberals but similar processing between the different groups which led the researchers to say:

“If you are a politically polarized person, your brain syncs up with like-minded individuals in your party to perceive political information in the same way,”

So far so good, maybe unsurprising. Political ideologists tick the same way, we knew that but the fMRI data is kind of cool (and has been done previously).

What was interesting is that a personality trait known as Uncertainty Intolerance seems to…

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Andy Hab

Sharing fascinating, fun, and important knowledge on the brain and human behaviour - most days. And masters track athlete - still going strong!