Tomczyk was the subject of experiments in 1908-09 at Wisła, in southern Poland, by the psychologist Julian Ochorowicz. Reportedly Tomczyk was regularly hypnotized by him for therapeutic purposes and she claimed to be controlled by an entity, "Little Stasia" ("Stasia" being a diminutive of Tomczyk's given name, "Stanisława"), who said she was not the spirit of any dead person. Tomczyk claimed she could levitate objects without contact, stop the movement of a clock in a glass case, and influence the turn of a roulette wheel.
She was tested during eleven sittings by the Society for Psychical Research in Great Britain between June 2 and July 13, 1914 in informal experiments admittedly not subject to rigid control with "inconclusive results", the most striking demonstration being the momentary levitation of a celluloid ball about 9 inches above a table with her hands about a quarter of an inch away.
Scientists suspected that the telekinesis Tomczyk was performing involved the use of a fine thread or hair, running between her hands to lift and suspend the objects in the air. This was confirmed when psychical researchers who tested Tomczyk occasionally observed the thread.
- "Stanisława Tomczyk photo description at Diomedia". Retrieved November 18, 2013. Description page at a stock photo agency representing the Mary Evans Picture Library, where the date is also given as 1909. She visited the researcher in 1908 and 1909; hence, the exact date is uncertain at this time and reported as 1908 elsewhere.
- "The Sketch. A journal of art and actuality". HathiTrust.org Digital Library. 70: 277. June 8, 1910. Retrieved November 17, 2014.
- "Journal of the Society for Psychical Research". HathiTrust.org Digital Library. 17: 24, 25. February 1915. Retrieved November 18, 2013.
- Carrington, Hereward (1992) . Story of Psychic Science. Kessinger Publishing. p. 136. ISBN 978-1564592590.
- Benjamin B. Wolman. (1977). Handbook of Parapsychology. McFarland & Company. p. 320. ISBN 978-0442295769
- Pearson's Magazine. June 1910. C. Arthur Pearson Ltd. p. 615
- Buckland, Raymond (2005). The Spirit Book: The Encyclopedia of Clairvoyance, Channeling, and Spirit Communication. Visible Ink Press. ISBN 9780780809222. Feilding's name is often misspelled 'Fielding', as here.
- Lewis Spence. (2003). Encyclopedia of Occultism and Parapsychology. p. 327. ISBN 978-1161361827