In 1972 an American scientist named Dr David Rosenhan performed an extraordinary experiment that revolutionised the study of mental health. He proved that psychiatry, the science of the mind, couldn’t tell the difference between sanity and insanity. Now Horizon re-creates this experiment in a search for the difference between the mentally ill and the supposedly sane. Ten subjects are forced to work together, face stressful situations and confront their fears. (Distributed under licence from Educational Publishers LLP.) Less