Mothering in the twentieth century has become a tricky business. We can take our babies' survival pretty much for granted, and in this way we differ from all the mothers who have come before us. Instead we worry about whether our babies will grow up to be happy and productive, a more complicated issue. Nobody yet has scientifically tested and perfected a parenting system that guarantees children will turn out okay. Much of the research focuses on what goes wrong, rather than what goes right, and psychologists from Freud onward have often laid the blame on mothers. This creates a lot of anxiety, as mothers struggle to raise psychologically healthy children. Mothers often feel that the stakes are high on everything they do, and the possibility of making serious mistakes makes the job of parenting seem frightening.