Ever wanted to know why you behave in certain ways? Even what your shopping list says about you as a person? Join Nick Knowles in a unique interactive television event as he challenges the psychologists behind the most widely used personality test in the Western world to put their theories into practice.

100 members of the public are put through a variety of tests that, according to top psychologists, will show what personality type they are and even enable them to predict the behaviour of each individual. With 16 different personality types to choose from, the psychologists reckon they can get at least 75% accuracy.

Discover your personality type at home by playing online, pushing the red button on your TV remote or scribbling your answers with a low-tech pencil and paper.