It all depends they could be pychic or it could just be a one time event
A person who sees and talks to ghosts is sometimes called a spirit medium.
ghost whisperer
An analogist analyzes and sees analogies.
An optimistic person.
A person who only sees the negative in others may be called critical, judgmental, or pessimistic.
she sees Tybalt's ghost searching for Romeo with a rapier in his hand
pessimist
a seance
Macbeth does.
lifeguard
i Know a person that wants to buy the same things I have
Hamlet is talking to the Ghost, which Gertrude can't see, which looks bizarre to her. For the first time, Gertrude sees Hamlet as seriously mentally ill, not just disturbed. Ironically, it's Gertrude whose perceptions are faulty in this scene.