The Sunday Times top-ten bestseller from the author of The Men Who Stare at Goats

 This is an utterly compelling and often unbelievable adventure into the world of madness. Jon Ronson meets everybody from a Broadmoor inmate who swears he faked a mental disorder to get a lighter sentence but is now stuck there to the influential psychologist who developed the industry standard Psychopath Test and who is convinced that many important CEOs and politicians are in fact psychopaths

What if society wasn't fundamentally rational, but was motivated by insanity? This thought sets Jon Ronson on an utterly compelling adventure into the world of madness.

Along the way, Jon meets psychopaths, those whose lives have been touched by madness and those whose job it is to diagnose it, including the influential psychologist who developed the Psychopath Test, from whom Jon learns the art of psychopath-spotting. A skill which seemingly reveals that madness could indeed be at the heart of everything . . .

Combining Jon Ronson's trademark humour, charm and investigative incision, The Psychopath Test is both entertaining and honest, unearthing dangerous truths and asking serious questions about how we define normality in a world where we are increasingly judged by our maddest edges.