^ Brian Righi. (2008). Ghosts, Apparitions and Poltergeists: An Exploration of the Supernatural through History. Llewellyn Publications. p. 52. ISBN 978-0738713632 "One medium of the 1920s, Mina Crandon, became famous for producing ectoplasm during her sittings. At the height of the séance, she was even able to produce a tiny ectoplasmic hand from her navel, which waved about in the darkness. Her career ended when Harvard biologists were able to examine the tiny hand and found it to be nothing more than a carved piece of animal liver."
In 1970 two psychical researchers investigated the direct-voice medium Leslie Flint and found that all the "spirit" voices in his séance sounded exactly like himself and attributed his mediumship to "second-rate ventriloquism". The medium Arthur Ford died leaving specific instructions that all of his files should be burned. In 1971 after his death, psychical researchers discovered his files but instead of burning them they were examined and discovered to be filled with obituaries, newspaper articles and other information, which enabled Ford to research his séance sitters backgrounds.
William Stainton Moses (1839–92) was an Anglican clergyman who, in the period from 1872 to 1883, filled 24 notebooks with automatic writing, much of which was said to describe conditions in the spirit world. However, Frank Podmore was skeptical of his alleged ability to communicate with spirits and Joseph McCabe described Moses as a "deliberate impostor", suggesting his apports and all of his feats were the result of trickery.
Do compose your emotions and appearance to hide any revealing information about yourself. Your facial expression, style of dress, personal mannerisms, and emotional outbursts can tell a psychic, especially a false one, a great deal about you to make it look like she knows all these things from a paranormal reading, when in fact, she is merely interpreting your physical appearance or reactions.