Mediumship became quite popular in the 19th-century United States and the United Kingdom after the rise of Spiritualism as a religious movement. Modern Spiritualism is said to date from practices and lectures of the Fox sisters in New York State in 1848. The trance mediums Paschal Beverly Randolph and Emma Hardinge Britten were among the most celebrated lecturers and authors on the subject in the mid-19th century. Allan Kardec coined the term Spiritism around 1860. Kardec claimed that conversations with spirits by selected mediums were the basis of his The Spirits' Book and later, his five-book collection, Spiritist Codification.
An experiment conducted by the British Psychological Society in 2005 suggests that under the controlled condition of the experiment, people who claimed to be professional mediums do not demonstrate the mediumistic ability. In the experiment, mediums were assigned to work the participants chosen to be "sitters." The mediums claimed to contact the deceased who were related to the sitters. The research gather the numbers of the statements made and have the sitters rate the accuracy of the statements. The readings that were considered to be somewhat accurate by the sitters were very generalized, and the ones that were considered inaccurate were the ones that were very specific.
For example, if a spirit wants to give the psychic medium the name Sandy, they might flash (in the psychic medium’s mind) the face of a person whom the psychic medium knows named Sandy. If they want to get the psychic medium to say the word “coffee,” they might show the psychic medium someone’s cat that had the name Coffee. This can be confusing and requires that the psychic medium interpret what they are seeing in their mind. For instance, the psychic medium might say cat rather than coffee; and to the person being read, the psychic medium might appear wrong when the psychic medium is actually just “misinterpreting” the message.
In 1991, Wendy Grossman in the New Scientist criticized the parapsychologist Stephen E. Braude for ignoring evidence of fraud in mediumship. According to Grossman "[Braude] accuses sceptics of ignoring the evidence he believes is solid, but himself ignores evidence that does not suit him. If a medium was caught cheating on some occasions, he says, the rest of that medium's phenomena were still genuine." Grossman came to the conclusion that Braude did not do proper research on the subject and should study "the art of conjuring."
The card meant to symbolize my hopes and my fears turned out to be the "Love" card, which shook me a bit, seeing as how I went on this quest in the hopes that I would learn more about how I can change my perspective on the love in my life. "There's nothing in this reading that would accentuate the fear and lots that would support the love. It's playful, it's feeding yourself, it's artistic, it's listening to the signs and your gut. Everything is supporting the hope. Unless you let these stupid thoughts run wild, you've got it."
^ M. Lamar Keene. (1997). The Psychic Mafia. Prometheus Books. p 122. ISBN 978-1-57392-161-9 "A medium still riding high in England is Leslie Flint, famed as an exponent of direct voice. William Rauscher and Allen Spraggett, who attended a sitting Flint held in 1970 in New York, said that it was the most abysmal flop of any seance they had endured. All the spirit voices sounded exactly like the medium and displayed an incredible ignorance of nearly everything pertaining to the sitters. The "mediumship " was second-rate ventriloquism."
When the spirit of a loved one visits us, they do it for one simple reason: because they love us. Think of it like this: If you passed your beloved grandmother on the street, wouldn't you stop and say hi? Even though they are in another dimension, they still experience, know, and understand the world we live in, and they love us and want us to know this. So look for signs from them.
^ LeCron, Leslie; Bordeaux, Jean (1970). Hypnotism Today. Wilshire Book Co. p. 278. ISBN 0-87980-081-X. When in a trance ... the medium seems to come under the control of another personality, purportedly the spirit of a departed soul, and a genuine medium undoubtedly believes the 'control' to be a spirit entity ... In the trance, the medium often enters a cataleptic state marked by extreme rigidity. The control then takes over, the voice may change completely ... and the supposed spirit answers the questions of the sitter, telling of things 'on the other plane' and gives messages from those who have 'passed over.'
A very large part is played by fraud in spiritualistic practices, both in the physical and psychical, or automatic, phenomena, but especially in the former. The frequency with which mediums have been convicted of fraud has, indeed, induced many people to abandon the study of psychical research, judging the whole bulk of the phenomena to be fraudulently produced.