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| by Carlos S. Alvarado Stevenson was involved with mental mediumship in several ways. One of them was the documentation of unexpected communications coming from unknown agents, a phenomenon he called drop-in communicators (Haraldsson & Stevenson, 1975; Stevenson, 1965, 1970). He believed these cases were important in terms of dealing with the argument that they could be explained by postulating the action of the ESP abilities of the medium. With such unknown communicators, Stevenson believed, there was no motivation, or less motivation to produce the veridical information: “Thus with regard to both the selection of sources of correct information and the motive to communicate it there seems to be an advantage in supposing that the communication does in fact come from a deceased person” (Stevenson, 1982, pp. 119–120). Stevenson also conducted tests with mediums (Haraldsson & Stevenson, 1974). In addition, he suggested to test for a possible discarnate communication by suggesting that, while a person was alive, they could encode the combination of a lock in a phrases that, communicated throuh a medium after death, could open the said lock (Stevenson, 1968, 1976). In one paper he reported negative results using this approach (Stevenson, Oram & Marckwick, 1989). Haraldsson, E., & Stevenson, I. (1974). An Experiment with the Icelandic Medium Hafsteinn Bjornsson. Journal of the American Society for Psychical Research, 68, 192–202. Haraldsson, E., & Stevenson, I. (1975). A Communicator of the “Drop-in” Type in Iceland: The case of Runolfur Runolfsson. Journal of the American Society for Psychical Research, 69, 33–59. Stevenson, I. (1965). New Evidence on an Important Detail in the Case of Abraham Florentine. Journal of the American Society for Psychical Research, 59, 47–55. Stevenson, I. (1968). The Combination Lock Test for Survival. Journal of the American Society for Psychical Research, 62, 246*#150;254. Stevenson, I. (1970). A Communicator Unknown to Medium and Sitters. Journal of the American Society for Psychical Research, 64, 53–65. Stevenson, I. (1976). Further Observations on the Combination Lock Test for Survival. Journal of the American Society for Psychical Research, 70, 219–229. Stevenson, I. (1982). Survival After Death: Evidence and Issues. In I. Grattan-Guinness (Ed.), Psychical Research: A Guide to Its History, Principles and Practices (pp. 109–122). Wellingborough, Northhamptonshire, England: Aquarian Press. Stevenson, I. , Oram, A., & Markwick, B. (1989). Two Tests of Survival after Death: Report on Negative Results. Journal of the Society for Psychical Research, 55, 329–336. |
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