Do I worry about her relationship with her phone, not just now but on into the adolescent years that are almost upon her? Yes, I do – and so do many other parents. So I welcome today's news that Imperial College is launching a study into the use of mobiles, focusing on 2,500 year 7 students who will be assessed now and again in two years' time. The study isn't looking at health risks around the use of mobile phones – of brain tumours and so on – though these will continue to be monitored in the years and decades ahead. Rather, it's looking at cognitive issues connected with the use of mobiles: such as how the use of phones might affect children's memory or attention span