The shifting patterns of family life in the UK are exposed in the latest findings from a study of the lives of 13,000 children born at the beginning of the new century. More than one in three children have already lived through domestic upheaval such as seeing their parents break up by the age of eleven and only half still have married parents by the time they finish primary school. But while the study provides further evidence of a powerful link between family break-up and issues such as behavioural problems or poverty, it also reveals how the children themselves are still 'strikingly happy'. It gives a vivid picture of modern British childhood with details on everything from what time children go to bed and whether their parents still use a ‘naughty’ chair to their intelligence test scores or their illicit use of social networking sites such as Facebook.