[cowpewter]

One of the ways that stimulants treat ADHD is by raising dopamine and norepinephrine levels. Also, one of the big problems with ADHD is time-blindness. Basically, to the ADHD person, there are only two times: Now and Not Now.

Video games are highly stimulating and full of immediate feedback when you do well or poorly. This gives you the dopamine hit that your brain is searching for. And the immediate feedback means that the results of your doing well or poorly are felt right away, instead of in a nebulous future.

So you can focus during the game because you're getting a constant stream of dopamine and you always know how well you're doing. Get to the blog post though and... where'd the dopamine go? If you don't write this blog post right now when will you feel the pain? If it's not for a while, then it's too far away for the ADHD brain to put it into perspective because of the time-blindness. It's one of the reasons ADHDers are famous for procrastinating til the last moment, then suddenly cranking out that paper the night before. Once you finally get that sense of urgency of the impending deadline, you can focus.