As I understand it it can be a lot worse, a lot better, or anywhere in between. Scientifically backed coaching can probably shift it towards the "better" side.

As I understand it it can be a lot worse, a lot better, or anywhere in between. Scientifically backed coaching can probably shift it towards the "better" side. This is a new area of research because the whole thing was written off for several decades due to the war on drugs.