According to the the description of intelligence it is supposed to effect the amount of skills points you get at level up.

Anyway I just restarted the game and this time intelligence is 8.

I'm still only getting 14 skills points at level up.
In my last game when intelligence was 6 i only got 14 skills points as well.
Is intelligence bugged?

1 intelligence= 0.5 skill points per level

That explains it then.

I guess I was expecting it to have as much effect as it did in Fallout 3.