Far from being wimpy mummy's boys young men who live at home with their parents are more likely to be violent than those who live independently. Living with one's parents has become more common in the past forty years, both in the U.K. and in the U.S. Researchers at Queen Mary, University of London surveyed 8,000 men and women who answered questions about violent behaviour over the past five years and mental-health problems. Although young men living at home make up only 4% of the U.K.'s male population they were responsible for 16% of all violent injuries in the last five years. The study found that the young men had fewer responsibilities and more money to spend on alcohol and were no longer influenced by their parents to conform to standards of behaviour expected of previous generations.