sentences:  Additional chapters cover the Star Gate project (1985 to 1995) the work of Rupert Sheldrake, and the ganzfeld experiments.The final chapter covers the evolution of Marks' own beliefs and attitudes toward the field of parapsychology as a whole.Echoing the concerns of the authors regarding the general popularity of parapsychology, psychologist Stuart Sutherland referred to "The Psychology of the Psychic" as “an excellent book", and noted that it "was turned down by over thirty American publishers, all of whom were competing to publish books endorsing psychic phenomena.