BLUF

Some studies have found that when it comes to beliefs (particularly regarding politics), people form opinions based on their emotions rather than facts—and new facts very rarely change a person's mind.

Summary

This article by Keith M. Bellizzi, writing for Salon, makes the following points:
  • Your worldview, including beliefs and opinions, starts to form during childhood.
  • A cognitive bias is where you only look, read or listen to things that confirm your existing beliefs.
  • Everybody suffers from a cognitive bias to a lesser or greater degree.
  • For many people, a challenge to their worldview reinforces their faith in their worldview—belief perseverance.
  • A first step in overcoming cognitive bias is to recognise that it exists.

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