The accusation “you’re deluded” is often used as something of a cheap shot intended to silence an opponent in debate. But what is the nature of a delusion and how can we assess rationality and irrationality? In this podcast, Owen Bennett-Jones talks to Professor Lisa Bortolotti who studies the philosophy of psychology and psychiatry at Birmingham University and is the author of among many other things, Delusions and Other Irrational Beliefs (Oxford UP, 2010) and most recently edited Delusions in Context (Palgrave Macmillan, 2018).

Owen Bennett-Jones is a freelance journalist and writer. A former BBC correspondent and presenter he has been a resident foreign correspondent in Bucharest, Geneva, Islamabad, Hanoi and Beirut. He is recently wrote a history of the Bhutto dynasty which was published by Yale University Press.