Why do people see ghosts?

For Halloween, we explore ghost sightings - how to explain them, what research says and if there's an ethical imperative to acknowledge them.

Do you believe in ghosts? 'I thought it was normal to see people that weren't there

PDF) Why some people see ghosts and other presences

Profs & Pints Online: Encounters with Ghosts - Crowdcast

What Do Ghosts Feel? – Association for Psychological Science – APS

Are ghosts real? A social psychologist examines the evidence - USC News & Events

Why Do People See Ghosts?

SEE THE PIC: Pennsylvania mom 'too scared to sleep' after seeing ghostly figure on security camera

Ever felt a ghostly presence? Now we know why

Why do so many kids 'see ghosts'? We asked some psychologists. - The Washington Post