I think you can tell SO much about a person by their words, how they are placed, which words are used, how frequently, and what words they avoid. Also, you can pick up on inconsistencies in their usage.(pronouns changing after the 5th time used-therein lies a lie) I've studied this for a few long intense years, with great appreciation. I feel confident to predict a type by communication style. If a person is hiding something, and say they are only showing one side of themselves, usually to me, it's very apparent, and I can also see what they are leaving out, as well as what's being thrown in. Words are a map to the thoughts. I say 100.