As a college psychology major, Susan Blackmore was intrigued by the suggestive evidence favoring ESP. She became a parapsychologist and devoted several years to studying ESP and other paranormal phenomena. However, she became frustrated, never able to find conclusive evidence of ESP. She developed alternate theories and experimented more, but still didn't find what she hoped to. Eventually, she abandoned her pro—ESP stance. Dean Radin also studied psychology in college and became a parapsychologist. But Radin was more fortunate in the research he undertook. He believes the results of his experiments, which were designed to test the ability of the human mind to affect events, prove that ESP is real.

So who is right about ESP-Blackmore or Radin? Even scientists who have studied the subject for many years are not in agreement. However, we can begin to shape our belief...