11-17: Watch out for this one. If they feel they are finally "pushed" or in their imaginary, delusional little world it's finally time for them to "teach everyone a lesson", they're going to snap. A definite candidate for therapy; they show emotional and social problems; both not healthy to be walking around with. They don't grasp that the 'problem' is their own unstable self.
5-10 - Oh, not good. This person is insecure as hell and as a result thinks being "angry and vocal" is a form of control, which they feel they don't have. This is their immature way of finding some actual "balls" and hence most of their idea of "mature" follows this warped view of reality they have. Not necessarily dangerous but probably has a hard time getting along with people as they don't get along with themselves.