The fraudulent medium Ronald Edwin confessed he had duped his séance sitters and revealed the fraudulent methods he had used in his book Clock Without Hands (1955). The psychical researcher Tony Cornell investigated the mediumship of Alec Harris in 1955. During the séance "spirit" materializations emerged from a cabinet and walked around the room. Cornell wrote that a stomach rumble, nicotine smelling breath and a pulse gave it away that all the spirit figures were in fact Harris and that he had dressed up as each one behind the cabinet.
A widely known channeler of this variety is J. Z. Knight, who claims to channel the spirit of Ramtha, a 30 thousand-year-old man. Others purport to channel spirits from "future dimensions", ascended masters, or, in the case of the trance mediums of the Brahma Kumaris, God. Other notable channels are Jane Roberts for Seth, Esther Hicks for Abraham, and Carla L. Rueckert for Ra.
Besides reaffirming my belief that I'm a great liar and should do it more, my test also gave me some insight on how psychics work. They're talented when it comes to finding ways squeeze emotions out of you and make general statements that allow you to fill in the blanks yourself—you're contributing to your own deception (example: They say they sense a female presence watching over you, at which point you say, "Oh shit, my aunt/grandma/mom/friend/cousin/sister/teacher died a little while ago—it MUST be her!"). I think so many people turn to psychics because they help ease the fear of the great unknown that is death and give meaning and purpose to seemingly unfair and random events in our chaotic universe. To me, that's a form of preying on the weak and exploiting people at their most emotionally vulnerable, but if you believe in the afterlife and psychic powers, I can understand how the experience would be comforting - after all, who doesn't want to know that a loved family member, living or dead, is doing okay?
Usually the reader can tell what tool would be best on a specific client in order to gain the most information. Some clients believe they should dictate that. Usually the reader knows based on their connection to the client. All tools have their limits. For this reason having more tools helps the reader develop wholeness. There are times when just the day itself can have its own energy. Perhaps the reader channeled a lot within the day and a different tool can be used to refresh the reader. There are some readers that can only channel during certain hours of the day.
In 1880 the American stage mentalist Washington Irving Bishop published a book revealing how mediums would use secret codes as the trick for their clairvoyant readings. The Seybert Commission was a group of faculty at the University of Pennsylvania who in 1884–1887 exposed fraudulent mediums such as Pierre L. O. A. Keeler and Henry Slade. The Fox sisters confessed to fraud in 1888. Margaret Fox revealed that she and her sister had produced the "spirit" rappings by cracking their toe joints.