The British journalist Ruth Brandon published the book The Spiritualists (1983) which exposed the fraud of the Victorian mediums. The book received positive reviews and has been influential to skeptics of spiritualism. The British apport medium Paul McElhoney was exposed as a fraud during a séance in Osset, Yorkshire in 1983. The tape recorder that McElhoney took to his séances was investigated and a black tape was discovered bound around the battery compartment and inside carnation flowers were found as well as a key-ring torch and other objects.
In 1880 the American stage mentalist Washington Irving Bishop published a book revealing how mediums would use secret codes as the trick for their clairvoyant readings. The Seybert Commission was a group of faculty at the University of Pennsylvania who in 1884–1887 exposed fraudulent mediums such as Pierre L. O. A. Keeler and Henry Slade. The Fox sisters confessed to fraud in 1888. Margaret Fox revealed that she and her sister had produced the "spirit" rappings by cracking their toe joints.
And at one point you’d hope that the physicist would step down from the pulpit and walk to your brokenhearted spouse there in the pew and tell him that all the photons that ever bounced off your face, all the particles whose paths were interrupted by your smile, by the touch of your hair, hundreds of trillions of particles, have raced off like children, their ways forever changed by you.
In a reading, for instance, if you are skeptical, the messages might not be quite as clear as they could be if you were more open-minded. If you are fearful or angry, this low mental energy could inhibit the clarity of the messages. If you are on medication or abusing drugs or alcohol, your mental and emotional clarity could also affect the clarity of the messages.
In a series of fake séance experiments (Wiseman et al. 2003) paranormal believers and disbelievers were suggested by an actor that a table was levitating when, in fact, it remained stationary. After the seance, approximately one third of the participants incorrectly reported that the table had moved. The results showed a greater percentage of believers reporting that the table had moved. In another experiment the believers had also reported that a handbell had moved when it had remained stationary and expressed their belief that the fake séances contained genuine paranormal phenomena. The experiments strongly supported the notion that in the séance room, believers are more suggestible than disbelievers for suggestions that are consistent with their belief in paranormal phenomena.