Description:For many years parapsychology has needed a wide-spectrum text that attempts to integrate the vase amount of data which have accumulated around the phenomena traditionally labeled as telepathy, clairvoyance, psychokinesis, precognition, apparitions, etc. This text admirably fills the need. The authors can be commended for their in-depth survey of the field and also for their awareness, implicit throughout the text, that the assumptions and theories of both proponents and critics are, at best, severely limited.