Sorry don't buy it, my son is ADD/HD and his biggest problem from first grade into high school was that he was bored to tears because he was too smart and ahead of his peers, the only thing in this article that I did see in my son was his interactions with others. WHat I observed with my son was what many other parents of like kids saw, as they grew older they learned to channel their ADD/HD and were usually more successful than their peers and personal interactions were on a par with normal people.
Nonetheless, ADD/ADHD almost certainly has a biological underpinning - so there are likely to be identifiable organic differences. But that should not be taken as a moral judgment about those who have ADD/ADHD, after all, there are identifiable organic differences between men's brains and women's brains, so it only stands to reason.
The more interesting part is that ADD/ADHD is associated with higher creativity in a statistically nontrivial way as well as with a shorter or less controllable attention span, and when that is added to classes that are taught to the middle (or lower common denominator), boredom is the almost inevitable result.
By way of disclosure, I have a close enough connection to the issue and have been motivated to do a lot of research so while I am clearly still a layperson and not an expert, I'm not an ignoramus either.
