[1] He became known for his objection to Great Britain's involvement in World War II and his subsequent imprisonment for being an unregistered conscientious objector.
During the Battle of Britain he was depicted wearing an RAF uniform,[3] despite the fact that by then he was in prison as a conscientious objector.
After serving three sentences he agreed to work as an ambulance driver and then as an agricultural labourer.
During the period at Cambridge, he developed the Spiral Maze, a psychomotor test that was able to distinguish between normal boys and those who were maladjusted or delinquent.
[7] In 1981 he published a biography of Hans Eysenck, with whom he had worked at the Institute of Psychiatry in London[8] He died in Cambridge aged 86 on 22 March 2001.