You've seen the movie, but how much do you really know about poltergeists? Poltergeists are probably the most misunderstood form of hauntings. The word "poltergeist" actually means "noisy ghost" in German. Researchers used to believe that noisy ghosts were causing the phenomena reported in so-called haunted houses. It was assumed that an outside force caused the things that occurred in a house that was "haunted" by a poltergeist. But today, most investigators no longer think so.
A variety of phenomena can be connected to poltergeist activity: knocking and tapping sounds, noises with no visible cause, disturbance of stationary objects like household items and furniture, doors slamming, lights turning on and off, fires breaking out, and much more. Today, researchers think that while the activity is certainly paranormal, it has nothing to do with ghosts.
You may be surprised by who's really causing the activity, however. The widely accepted theory behind poltergeist phenomena is that it's usually caused by a person. This person is usually an adolescent girl who is going through an emotionally troubled time. The theory is that this person may be unconsciously manipulating the items in the house by psycho kinesis, which the power to move things by energy generated in the brain.
Kinetic energy remains unexplained, but even mainstream scientists are starting to admit that it may exist. It is unknown why this energy appears in puberty-age girls, but it has been documented. When the activity begins to occur, the girl is usually in the middle of emotional or sexual angst. It is also possible for young boys, and even adults, to manifest this odd ability. The majority have no idea they're causing the activity.
If you or someone you know is freaked out by this kind of experience, it is always better to consult a competent mental health practitioner. Of course, not all hauntings can be so easily explained. In some cases, people aren't the cause of the situation. Sometimes it's possible that the source of the activity is an intelligent spirit. These entities try to make their presence known by moving objects. If this is the case, then it's time to think about moving.