Gladys Osborne Leonard (28 May 1882 – 19 March 1968)  was a British trance medium, renowned for her work with the Society for Psychical Research. Although psychical researchers such as Oliver Lodge were convinced she had communicated with spirits, skeptical researchers were convinced that Leonard's trance control was a case of dissociative identity disorder.
Leonard was born in Lytham on 28 May 1882. She claimed to have experienced her first 'visitation' by spirits when she was a child. She claimed that the spirits would show her landscapes which she would refer to as the 'Happy Valley'. She was trained as a singer but childhood illness in 1906 prevented her from continuing. Her interest in spiritualism developed whilst she was ill when a Spiritualist nurse in the hospital invited her to take part in her first table seance.
By 1915 Leonard was giving professional readings. She claimed to channel the spirit of an Indian woman named Feda who had been married to her great-great-grandfather, and readings were given 'through' her. Patrons of Leonard attested that when Feda was being channelled Leonard spoke in broken English with little understanding of the language.
Leonard gained fame as a medium after conducting séances with the family of Oliver Lodge, which were described in his book Raymond or Life and Death (1916). The book documented the séances that he and his wife had attended with Leonard. Lodge was convinced that his son Raymond had communicated with him and the book is a description of his son's experiences in the spirit world. According to the book Raymond had reported that people who had died were still the same people when they passed over, there were houses, trees and flowers and the Spirit world looked similar to earth but there is no disease. The book also claimed that when soldiers died in World War I they had smoked cigars and received whisky in the spirit world and because of such statements the book was criticised. Walter Cook wrote a rebuttal to Lodge Reflections on Raymond (1917) that directly challenged Lodge's beliefs in Spiritualism.
In 1918 Leonard began working with the Society for Psychical Research. The Society would often use proxies in place of grieving relatives in an attempt to minimise fraud. Their publication detailing the results of these sittings was praised by psychical researchers and resulted in even more publicity for Leonard. Leonard later worked with Radclyffe Hall and the results of those sessions were published in the Proceedings for the Society for Psychical Research in 1919.
Researchers such as Clodd (1917), Culpin (1920), Hansel (1966) and Moore (1981) who investigated Leonard's mediumship from psychical reports were not convinced she had communicated with spirits.
Clodd has stated that Leonard had known some of her sitters before the séances, and could have obtained information by natural means. Culpin has suggested that her results could be explained by cold reading and subjective validation. As a medium she specialised in 'book tests', whereby she would select a book from the shelf which held special significance to the deceased. In 1921, Eleanor Sidgwick analysed these tests and found that only 36% were successful. The philosopher Antony Flew commented that Leonard's references to books and pages were imprecise.
Charles Richet who studied the alleged communications in Raymond concluded that autosuggestion was the likeliest explanation for the information gathered by Leonard and her spirit control "Feda" was a secondary personality. Historian Ruth Brandon has also noted that Feda was a "typical hysterical" second personality.
In 1934, Whately Carington tested Leonard and her control by word-association tests also came to the conclusion Feda was a secondary personality and not a spirit. The psychologist Donald West wrote regarding the tests:
Carington discovered that the results given by Feda and Mrs Leonard were neither what one would expect from testing two different persons nor what one would normally get from testing the same person twice. Superficially their patterns were grossly dissimilar, but they were related to each other – that is, negatively correlated. Where the normal Mrs Leonard tended to give a long reaction time, the entranced Mrs Leonard gave a short one, and vice versa. In other words Feda and Mrs Leonard were not independent individuals; they were complementary characters. The result is in keeping with the theory that Feda is a dramatization of the medium's own subconscious trends. It is very difficult to reconcile these findings with a Spiritualistic interpretation.
Although Lodge was convinced that Leonard's spirit control had communicated with his son, he admitted a good deal of the information was nonsense and suggested that Feda picked it up from a séance sitter. Philosopher Paul Carus wrote that the "story of Raymond's communications rather excels all prior tales of mediumistic lore in the silliness of its revelations. But the saddest part of it consists in the fact that a great scientist, no less a one than Sir Oliver Lodge, has published the book and so stands sponsor for it."
According to spiritualists Feda could speak independently of the medium. To investigate this the psychical researchers Theodore Besterman and Gerald Heard tested with microphones the amount of displacement from the medium's mouth. A voice was heard on occasion but no displacement was detected. The conclusion was that the voice effect was merely a ventriloquial illusion. It was claimed by spiritualists that Leonard's spirit control Feda communicated with Raymond, however when asked specific questions he failed to answer them. Raymond could not give the name of a single soldier he had been with before his death.
The researcher Walter Mann was convinced that Leonard was a fraud. In a séance on 3 December 1915 Leonard described an army photograph featuring Raymond the son of Oliver Lodge sitting on the ground with an officer placing his hand on his shoulder. Mann wrote that Leonard had already seen the photograph as she had five days to obtain the photograph before the séance. Paul Tabori wrote that the photograph "might have been seen, described and even copied by others. There is no evidence that Sir Oliver went into all the possibilities of trickery."
- My Life in Two Worlds (1931)
- Personality Survives Death: Messages from Sir William Barrett [with Florence Elizabeth Perry Barrett] (1937)
- The Last Crossing (1939)
- Brief Darkness (1942)
- Light on the Horizon [with Archibald Tyrell Robinson] (1959)
- "Leonard, Gladys Osborne", in The Spirit Book: The Encyclopedia of Clairvoyance, Channeling, and Spirit Communication, by Raymond Buckland (Visible Ink Press, 2005) pp225-226
- Brandon, Ruth. (1983). The Spiritualists: The Passion for the Occult in the Nineteenth and Twentieth Centuries. Weidenfeld and Nicolson. pp. 213–218. ISBN 0-297-78249-5
- Roberts, Carl (1932). The Truth about Spiritualism. Kessinger Publishing. pp. 202–. ISBN 978-1-4179-8128-1. Retrieved 29 October 2011.
- Dellamora, Richard (2011). Radclyffe Hall: A Life in the Writing. University of Pennsylvania Press. pp. 56–. ISBN 978-0-8122-4346-8. Retrieved 29 October 2011.
- Kollar, Rene (2000). Searching for Raymond. Lexington Books. pp. 9–10. ISBN 978-0739101612
- Byrne, Georgina (2010) Modern Spiritualism and the Church of England, 1850–1939. Boydell Press. pp. 75–79. ISBN 978-1843835899
- Emden, Richard. (2012). The Quick and the Dead. Bloomsbury Paperbacks. p. 201. ISBN 978-1408822456
- "Leonard, Gladys Osborne 1882–1968". The Element Encyclopedia of the Psychic World. Vol. 10. Harper Collins. 2006. pp. 388–391.
- Clodd, Edward. (1917). The Question: A Brief History and Examination of Modern Spiritualism. Chapter Mrs. Leonard and Others. pp. 215–241
- Culpin, Millais. (1920). Spiritualism and the New Psychology: An Explanation of Spiritualist Phenomena and Beliefs in Terms of Modern Knowledge. Edward Arnold. pp. 112–122
- Hansel, C. E. M. (1966). ESP: A Scientific Evaluation. Charles Scribner's Sons. pp. 227–229
- Moore, Brooke Noel. (1981). The Philosophical Possibilities Beyond Death. Thomas. pp. 86–90. ISBN 978-0398044596
- Douglas, Alfred. (1982). Extra-Sensory Powers: A Century of Psychical Research. Overlook Press. p. 155. ISBN 978-0879511609
- Flew, Antony. (1953). A New Approach To Psychical Research. Watts & Co. p. 47
- Price, Harry (1939). Fifty Years of Psychical Research: A Critical Survey. Ayer Publishing. pp. 149–. ISBN 978-0-405-07043-3. Retrieved 29 October 2011.
- Edmunds, Simeon. (1965) Miracles of the Mind: An Introduction to Parapsychology. Thomas. p. 77. ISBN 978-0020527541 "Drayton Thomas made the notes of his sittings with Mrs. Leonard available to W. Whately Carington when the latter carried out his noted quantitative study of mediumship, and collaborated closely with him in this work, although he disagreed strongly with Carington's conclusion that "Feda" was not a spirit entity, but merely a secondary personality of the medium. Carington's view, however, received formidable support from the results of his application of the psychological technique known as the word association test, which he made on Mrs. Leonard and a number of other trance mediums."
- Douglas, Alfred. (1982). Extra-Sensory Powers: A Century of Psychical Research. Overlook Press. p. 159. ISBN 978-0879511609 "Carington was interested in the psychology of the trance state, and to investigate this further applied Word Association Tests to various mediums, including Mrs Leonard. The results were not conclusive, but in the case of Mrs Leonard Carington believed that they demonstrated a "counter-similarity" between the personalities of Mrs Leonard and Feda; an inverse relationship that tended to confirm Lady Troubridge's studies. Carington concluded that in his view Feda was a secondary personality of Mrs Leonard, probably formed round a nucleus of repressed material."
- West, Donald. (1954). Psychical Research Today. Duckworth. p. 60
- Carus, Paul. (1917). Sir Oliver Lodge on Life After Death. The Monist, Vol. 27, No. 2. pp. 316–319.
- Barham, Allan. (1984). Strange To Relate. Colin Smythe. p. 74. ISBN 978-0861401864
- Franklyn, Julian. (2003). A Survey of the Occult. Kessinger Publishing. pp. 395–396. ISBN 978-0766130074
- Martin, Alfred. (1918). Psychic Tendencies of To-Day. D. Appleton and Company. p. 97
- Mann, Walter. (1919). The Follies and Frauds of Spiritualism. London: Watts & Co. pp. 187–188. "There is not the slightest doubt in the present writer's mind that Mrs. Leonard had seen the photo in question. Let us go over the dates again. Captain Boast sent the negatives to England, where they arrived on 15 October 1915. A large number of copies appear to have been printed-there were twenty-one- officers and their friends to supply. On 28 November Mrs. Cheves had six in her possession, with a key to the names, and wrote offering Lady Lodge a copy, which was not sent until December, 7 after an interval of nine days. On 28 November, then, it was common knowledge in Sir Oliver's household that the photo existed. On 3 December, five days later, Mrs. Leonard describes the photo at a sitting with Sir Oliver. Five days gave ample time for her to obtain a copy of the photo; and the unfortunate delay of Mrs. Cheves in not sending her copy until the 7th gave just the chance needed to work the miracle."
- Tabori, Paul. (1961). The Art of Folly. Prentice-Hall International, Inc. p. 173
- Theodore Besterman, W. S. Irving. (1932). Evidential Extracts from Sittings with Mrs. Leonard. Proceedings of the Society for Psychical Research 40: 129–161.
- Theodore Besterman, Gerald Heard. (1933). Note on an attempt to locate in space the alleged direct voice observed in sittings with Mrs. Leonard. Journal of the Society for Psychical Research 28: 84–85.
- Edward Clodd. (1917). The Question: A Brief History and Examination of Modern Spiritualism. London: Grant Richards Ltd. Chapter Mrs. Leonard and Others. pp. 215–241.
- Walter Cook. (1917). Reflections on "Raymond". London: Grant Richards.
- Paul Hookham. (1917). Raymond: A Rejoinder Questioning The Validity of Certain Evidence and of Sir Oliver Lodge's Conclusions Regarding It. B. H. Blackwell.
- Oliver Lodge. (1916). Raymond or Life and Death. New York: George H. Doran Company.
- Walter Mann. (1919). The Follies and Frauds of Spiritualism. London: Watts & Co. pp. 182–188.
- Charles Arthur Mercier. (1917). Spiritualism and Sir Oliver Lodge. London: Mental Culture Enterprise.
- William Henry Salter. (1962). Trance Mediumship: An Introductory Study of Mrs. Piper and Mrs. Leonard. Society for Psychical Research.
- Eleanor Sidgwick. (1921). An Examination of Book-Tests Obtained in Sittings with Mrs Leonard. Proceedings of the Society for Psychical Research 31: 241–400.
- Susy Smith. (1964). The Mediumship of Mrs. Leonard. University Books.