All In The Mind

Home Secretary Theresa May says the UK is facing a terror threat "perhaps greater than it has ever been", and this week's anti-terrorism bill includes tighter airport security. But two psychology professors say current screening methods used at airports, where security agents check the behaviour of passengers for "suspicious signs", need an urgent upgrade. Professor Tom Ormerod from Sussex University and Coral Dando from the University of Wolverhampton, designed a new conversation-based screening method and when they tested it at international airports, including London Heathrow, they found it was 20 times more effective at catching airline passengers with false cover stories than the traditional "suspicious signs" method. Claudia Hammond asks them how the results from this study will affect airport security screening.If you have extremely suspicious thoughts, or you hear voices that other people can't hear, traditionally these are seen as signs of a serious mental illness such as schizophrenia. On Thursday t