What the study does NOT take into consideration:
The So-What? question. That study needs to also show a child's POTENTIAL for success later in life. Often, because Adults are suffering HORRIBLE tax burdens, Children have it good. When the children become adults, They have it HORRIBLE, like the adults before them.
Something like 75% of the Nobel Science Prizes have come from Americans, or those who studied primarily in America, right?
“… the greatest detractor from high performance is fear: fear that you are not prepared, fear that you are in over your head, fear that you are not worthy, and ultimately, fear of failure. If you can eliminate that fear—not through arrogance or just wishing difficulties away, but through hard work and preparation—you will put yourself in an incredibly powerful position to take on the challenges you face" - Pete Carroll.