Many of us encounter individuals with deeply held convictions that run directly counter to all the evidence we know as researchers. It is easy to dismiss conspiracy theorists as crazy or irrelevant, but when we do so, we often inadvertently fuel the root causes of their beliefs. In this episode Mark explains some of the psychology that explains what attracts people to conspiracy theories, and suggests three things you can do to engage more constructively with the beliefs of this group, to deliver benefits for even the most hardened believer.