If your child has an imaginary friend, don’t worry. It may be a good thing, says child psychologist Evan Kidd of La Trobe University in Australia. In a study of 44 children between the ages of four and six, some of whom had imaginary friends and some of whom did not, those who did were found to be significantly better at communicating when describing pictures in a book. It was not clear whether their fictitious friendships helped them develop communication skills, or if there was another explanation for the link. But it’s thought that the former is possible, as a pretend relationship makes the child imagine that they are someone other than themselves.