When you hear the word 'heretic', you might think it refers to those who hold unorthodox beliefs. And you'd be right. But many heretics are intelligent people – scientists at universities or high profile public figures – so surely there must be something else at play?

In his book The Heretics, Will Storr reveals how the stories we tell ourselves about the world invisibly shape our beliefs, and how the neurological ‘hero maker’ inside us all can so easily lead to self-deception, toxic partisanship and science denial.

Here he is talking to editor Kris Doyle.