Diplomacy
Defaults: IQ-6, Politics-6.
This is the skill of negotiating, compromising, and getting along with others. You may substitute a Diplomacy roll for any reaction roll in a noncombat situation, as described under Influence Rolls.
Unlike other Influence skills, Diplomacy never gives a worse result than if you had tried an ordinary reaction roll. Failure with Fast-Talk or Sex Appeal alienates the subject, but Diplomacy is usually safe.
A successful roll also allows you to predict the possible outcome of a course of action when you are negotiating, or to choose the best approach to take.
If you know Diplomacy at level 20 or better, you get a +2 bonus on all reaction rolls!
Modifiers: +2 for Voice; -3 for Low Empathy; -1 for Oblivious; -1 to -4 for Shyness; -2 for Stuttering.