BogMod/MentalAttacks
From Exalted - Unofficial Wiki
For each multiple of a characters MDV a social roll beats it by the social attack is that much more effective. Take your successes rolled and see how many times you can subtract their MDV from it without going to 0 or less then 0. That is how much WP it takes to resist it. Or if accepted that is how many points is taken from or away from an intimacy. A character can always spend all their remaining WP to resist a social attack and be counted as if they had spent the two WP to resist natural persuasion.