Katie is a little "different" than others. She often feels as if deceased relatives are in the room with her. She believes she possesses a "sixth sense" by which she can read people's minds and foretell the future. She talks to herself frequently and often speaks to others in a meandering, vague, although not incoherent manner. She is often unkempt, believes people are talking about her, and tends to be socially aloof. She is most likely suffering from ______ personality disorder.