cross-correspondence
n. in spiritualism and parapsychology, the situation in which two or more mediums, who claim to be in touch with the same spirit source but not with each other, produce similar or complementary messages. To the believer, cross-correspondence provides firm evidence for the objective reality of spirit messages (or, at the very least, for some form of telepathy between the mediums). A more mundane explanation might stress (a) the mediums’ access to the same biographical facts about the dead person and the same information regarding his or her interests, tastes, and opinions and (b) the mediums’ knowledge of the same spiritualist texts concerning the nature of the afterlife and the spirit world.