It is the issue that has long divided parenting experts: when your baby starts to cry, is it wise to immediately rush to its aid or should you leave it alone for a while first?
The long-running argument is set to be reignited this week, when a new book by the childcare expert Penelope Leach is published. It claims that distressed babies who are repeatedly left to cry are at risk of developing problems in later life.
By Sarah Cassidy



