Divorce turns many children’s lives’ upside down. In the English-speaking world today, only about half of all children celebrate their 16th birthdays with their biological parents still living together. New scientific research indicates that many assumptions about shared custody arrangements can actually undermine a child’s well-being, according to psychologist Penelope Leach. In a new book, the best-selling author argues that what seems fair for the parents is seldom best for the child. She tells us how parents can help their children deal with divorce by putting the needs of the child first.