Selective in who it affects? Well, yes.
Selective in how it affects? Maybe.
I just know from personal experience with my son that 1) yes he IS ADHD and 2) yes he could play Playstation for hours on end.
" 1) yes he IS ADHD and 2) yes he could play Playstation for hours on end."
So, if he has an Attention and HyperActivity Disorder, how is he able to pay Attention to a video game and not be Hyperactive for hours on end?