Parenting by John Rosemond
The myth of the first three years has it that whatever habits, traits, dysfunctions and so on that a child develops during this admittedly formative period are going to stay with him for life. That is not necessarily so. For example, Romanian orphans who had suffered severe emotional and physical neglect during infancy and toddlerhood recovered fully after being placed with American families. When put in play groups with American-born kids who were living with biological parents, they could not be identified reliably. The adoption-babblers have a difficult time explaining that, by the way.