[cm2187]

But these studies are merely going to give you a correlation. It will always be very hard to prove direct causality without experimentation, which on humans is not really feasible or without a full understanding of how the brain works, which we are still very far from.

The other thing is that the way I like to think of our brain is like a muscle. Our DNA drives much of the range in which we can develop our muscles, people born with a certain body type will never be an athlete, but even if you are born with good muscular capacity, a KFC-eating couch potato will never get to the olympics. What one does with this capacity matters a lot. Only science will tell but I like to think that the brains works in a similar way. Some kids will never be geniuses but there is still a wide range in which they can evolve so there is no reason to corner them in a box.

[maxerickson]

Even trained practitioners have trouble treating statistics like statistics. For example, the anecdotes in http://www.bbc.com/news/magazine-28166019

So the idea that people in general aren't going to mistreat and over-interpret the information gathered is a little ambitious.