THE COMMON THREAD BETWEEN ESP AND PK by Michael A. Thalbourne. New York: Parapsychology Foundation, 2004. Pp. xiii + 112. $20 (paperback). ISBN 0-912328-58-4

Maintaining a tradition going back 50 years, this slim book is the 19th in a series of parapsychology monographs published by the Parapsychology Foundation. The Common Thread represents Michael Thalbourne's attempt to consolidate the separate notions of extrasensory perception (ESP) and psychokinesis (PK) into a unitary concept, which the author terms psychopraxia, meaning something like "the soul bringing about accomplishments" (p. 61). This unification has been proposed in order to surmount a number of longstanding ...