Experience - Solo vs Duo, Trio, or 4+

[Rahnza]

I think that change was in PoP.

Pretty sure that exp here is evenly distributed without a bonus. You're in a full group, you kill a mob, you get 16.7% of the exp (further less if you group has exp penalties). It's not always best to add someone to a group, especially if they're an unnecessary hybrid or carry some other exp penalty (monk, race, etc).