6. Poltergeist Haunting

6. Poltergeist Hauntings
Poltergeist activity is usually caused by an adolescent teenage girl going through puberty stages. During this stage of development, a young girl can harbor an extreme amount of inner energy. This energy can be projected with the mind, which can cause tapping sounds, the movement of objects, lights flickering off and on. Poltergeist activity usually originates from a human being.
Case Example: Walter B. Gibson, The Shadow
Walter B. Gibson, writer of the pulp series The Shadow thought about his character The Shadow so much, that his projected thoughts would actually create a hologram image of The Shadow, that would lurk in his apartment. When he had guests over, his guests were frightened by a man dressed all in black, with fedora hat and red scarf covering his face. They were describing the fictional character The Shadow. The Shadow was Walter B. Gibson's poltergeist, an entity projected from his mind. With this case example, not all poltergeist activity is created from adolescent teenage girls.

Source