Poltergeist

A  (from German "poltern", which means "rumble" or "make noise", and "geist", which means "ghost", "spirit" or "embodiment") is a spirit or ghost that is able to move and influence objects. Poltergeists are said to be invisible.

Poltergeists are said to bother only one person at a time. This person is called their "focus". They are said to only last a few weeks, then will move on to another target. Often poltergeists are reported around children and adolescents. 

Some scientists think that poltergeists only exist in a person's head as a result of psychokinesis. They think that the "poltergeist effect" is a result of mental trauma.

 Media 
There is a 1982 movie called Poltergeist.

In Harry Potter there is a poltergeist named Peeves. However, Peeves is not a classic poltergeist. He can be seen and does not focus on bothering just one person.

 References 

 Other websites 
 Poltergeist: The Legacy Website 
 Dehaunting Techniques
 International Journal of Parapsychology
 Princeton Engineering Anomalies Research 
 Skeptic's Dictionary
 1926 silent short film of the Eleonora Zugun poltergeist case On YouTube, with German title cards.

Category:Folklore