Your children are not your children.
They are sons and daughters of Life’s longing for itself.
They come through you but not from you.
And though they are with you yet they belong not to you

                                                                                                  – Kahlil Gibran

What makes these research great? It is a new theory. It can explain and predict the child’s immigrant language ability very well. It also counter-intuitive, because we tend to believe that parents and only parents have great effect to children.