I agree that there is a relationship between people who have secure attachment when they were young to those being more well off later in life, but there can definitely be other circumstances that also influence higher well-being. One such factor is the wealth level of the family. If they are poorer, it can be much harder for the child to grow up and have higher well being. On the other hand of course, a wealthier family will have a great chance of both the mother and father working, so the mother may not be able to spend as much time with the child and develop a secure attachment.
