Video Gaming Psychology

My friend was telling me about the psychology behind video gaming.
Not the video game violence kind of psychology, but how it affects the brain.

To summarize everything he said, video games is about instant gratification.
While you are playing, you are sent new messages constantly.
Using COD3 as an example (cause I just started playing online with my friend), what do you do in COD?
Well while you are pressing the run button, you turn a corner while trying to see if an enemy is at the corner.
While doing so, you learn to aim down your sights to shoot faster, plus you want to press it at the right timing since aiming slows you down.
And if you play enough, you learn to look at your radar, ammo, listen for sounds, when to use your kill streaks, how other players are doing, if you need to switch classes, how well your team is doing, and etc.

It's a lot of messages you are getting, and bam bam bam, when you are use to that and go back to school.
What do you see? People getting bored at school.
It's not because kids have ADD, it's because their brain has been rewired from all the gaming.

- - - - -

I notice that when I am on the computer, I use the Alt + Tab button a lot.
Like A LOT.
This increases when I am doing homework, this is when I am suppose to focus on 1 thing.
Which I find hard, and I have to switch between my Hotmail, FB, Grooveshark, Youtube, Manga, then back to Microsoft Word.
This maybe happens.... every 15 secs I get back on Word? (I dunno actually, I've never checked)

But now I know what I have to do, and for what reason I should stop for.
So I should stop video gaming since I rely on the 'instant gratification'.
Yet I still want to play COD cause I just started this week!
But stopping would be better for the long run....
So how about letting myself play for a certain amount of time....
And it has to be serious, not like 2 hours + however much you feel like.