Lajos Pap was originally investigated by the psychical researcher Chengery Pap in the 1920s in a series of experimental séances. He was alleged to have produced apport and psychokinetic phenomena. Various dead and living animals were discovered after his séances such as frogs, lizards, mice and snakes. Chengery Pap stored many of these specimens in a museum. However, it was destroyed during World War II and only photographs remain. The scientific reception to the experiments was not favourable. In 1928, Theodore Besterman from the Society for Psychical Research attended séances and concluded the phenomena were fraudulent.
In 1935, Lajos Pap was investigated by the International Institute for Psychical Research in London by the psychoanalyst Nandor Fodor. He reported that the phenomena were fraudulent and not evidence for the paranormal. During the séance a dead snake appeared. Pap was searched and was found to be wearing a device under his robe, where he had hidden the snake.
- Anderson, Rodger. (2006). Psychics, Sensitives and Somnambules: A Biographical Dictionary with Bibliographies. McFarland & Company. p. 132. ISBN 978-0-7864-2770-3
- Gyimesi, Júlia. (2014). Between Religion and Science: Spiritualism, Science and Early Psychology in Hungary. International Psychology, Practice and Research 5: 1–20.
- Fodor, Nandor. (1960). The Haunted Mind: A Psychoanalyst Looks at the Supernatural. Helix Press. pp. 100–122
- Price, Harry. (1939). Mechanics of Spiritualism. In Fifty Years of Psychical Research. Longmans, Green & Company.