How to Create a Ghost.

Is it possible to create a ghost? Consider these familiar types of ghost experiences:

• A group of teenagers gathered around a Ouija board receives mysterious messages from a person’s spirit who claims to have died 40 years ago.
• A paranormal society conducts a séance where they contact a ghost that communicates though table rappings.
• The residents of a century-old home continually see the spirit of a young child playing in the hallway.

What are these manifestations? Are they truly the ghosts of departed people? Or are they creations of the minds of the people who see them?

Source: About.com