Describes the scientific research into reports of ghosts and apparitions, covering different types of phenomena, their characteristics, research methods and theories of causation.

Seventeenth century clergyman (1636-1680) and member of the Royal Society, one of the first intellectuals to take a scientific interest in paranormal claims.

Edmund Gurney (1847-1888) was a founder member of the Society for Psychical Research, noted for his research on hypnotism, telepathy and apparitions.  

This late nineteenth century apparitional case was discredited by the revelation of discrepancies in the original account. However, an alternative explanation has been noted. 

James Houran is an American psychologist and parapsychologist whose research interests include the study of transliminality, ghostly phenomena and paranormal belief.  

Bereavement therapy based on EMDR, said by practitioners to bring relief by facilitating healing visions of deceased loved ones.

Infrasound (audio frequencies below normal human hearing) has been investigated as a possible cause of paranormal-seeming effects.

In recent years, a variety of anomalous mental phenomena have been noted that appear to be triggered by crisis relating to danger, death and bereavement. Research into these phenomena has gathered momentum in the last decade, as it becomes clear that the prevalence rate across categories is substantial.

Attempts have often been made to catch paranormal events on film and video. As proof of their occurrence, such images are usually vulnerable to claims of misinterpretation, poor practice or fraud. 

Published in 1894, this book by a leading member of the newly founded Society for Psychical Research is one of the best available overviews of nineteenth century ESP literature.