You can bet your bottom dollar that very few of that 57% will have children with very poor attention, poor behaviour, etc.
Anybody who has had a child that does struggles with concentration will understand that it isn't a choice they are making, just like they do not choose to be disorganised and they don't choose to have poor short term memory. The physiological differences between these children and children that do not suffer from such symptoms are easy to measure.
So, if you're one of the 57% who thinks ADHD is just an excuse please look at the research on the development of the cerebellum, you will become far more understanding and tolerant with those who have been labeled with ADHD.
So, if you're one of the 57% who thinks ADHD is just an excuse please look at the research on the development of the cerebellum, you will become far more understanding and tolerant with those who have been labeled with ADHD.