It has been argued that an infant under three who is cared for outside the home may suffer because of the separation from his parents. The British psychoanalyst john Bowlby maintains that separation from the parents during the sensitive “attachment” period from birth. to three may scar a child' s personality and predispose it to emotional problam in later life. Some people have drawn the conclusion from Bowlby ' s work that children should not be subjected to day care (nursery school) before the age of three because of the parental separation it entails, and many people do believe this. But there are also arguments against such a strong conclusion.