Skill damage formulas?

Hello!
I ran across physiologic guide on effects of STR, DEX & INT on character stats, However i see no mention about skill damage! It is always assumed that more STR yields more skill damage for bears, more DEX yields more skill damage for archers and INT for mages, but i never seen a formula or detailed explanation of what drives skill damage to back that assumption. What is known is that it is some combination of attack damage and primary stat.... Anybody got a guide on that?

Or you could respec and b4 you submit changes look at your damage range as opposed to dps.
When techno made the fox class she said it was a damage dealer but its main stat is int. Flufinstuff was the one to tell her that it did more damage with dex, despite that int does increase the poison effects, dex was the way to do max damage no matter what its "primary stat" is supposed to be.