[1][2] His career was covered extensively by the Journal of the American Society for Psychical Research,[3] and he took part in a number of notable experiments conducted by paranormal researchers/debunkers, including Harry Price, Albert von Schrenck-Notzing and Eric Dingwall.

After Meyer and Przibram's accusations, the institute concluded that the abilities that Schneider had demonstrated up to that point were all, based on the balance of probability, the result of trickery and that he was no-longer of interest to them.

In his notes in the Bulletin VII of the Boston SPR published under Experiments with Physical Mediums in Europe (1928) he wrote "despite my studied and unremitting complaisance, no phenomena have occurred when I had any part in the control, save curtain movement which were capable of the simplest explanation.

"[15] Whilst Prince did not detect any concrete evidence of fraud he found the red light too dim to observe the medium and suspected that Schneider's spirit guide "Olga" insisted the sitters talk loudly to act as a distraction and possible cover for an accomplice in the room.

[19] In 1929, Schneider took part in a number of experiments conducted by notable investigator/debunker Harry Price at the National Laboratory of Psychical Research.

[4] Price recorded that during his experiments various phenomena were observed; including the movement of objects placed around the room and the apparent manifestation of mysterious hands and shapes.

[6] He wrote that the substance registered on sound recording equipment when it moved, and that it could pass through objects put in place to impede it.

Price made a prolonged investigation of Rudi Schneider and proved conclusively that the medium resorted to trickery when he believed himself to be unobserved... Osty has too often shown in the past, despite some intellectual ability, evidence of an amateurish and uncritical approach to his subject.

[35] Zoologist Solly Zuckerman also attended some séance sittings and wrote that the mediumship of Schneider had not passed any scientific tests.

[37] Between October 1933 and March 1934 Schneider was investigated by the Society for Psychical Research in fifty-five sittings and not a single paranormal phenomenon was observed.

Another researcher, Whately Carington had proven by tests that the spirit "Olga" which Schneider channeled in reality was indistinguishable in psychological make-up from himself.

[38] Oliver Gatty and Theodore Besterman communicated their results to Nature, concluding that in their tests there was "no good evidence that Rudi Schneider possesses supernormal powers.