The four Mental Attributes are Intellect, Mind, Charisma, and Confidence. Intellect (taking the place of D&D's Intelligence) is about problem-solving and comprehension while Mind (taking the place of D&D's Wisdom) is about using what you learned through experience. Charisma and Confidence are like D&D's Charisma; both have similarly themed skills except they have different methods. Charisma is based on personality and human engineering (getting others to believe you and manipulating or convincing them into doing what you want). Confidence is based on cunning and willpower (believing in yourself and making people do what you want).