In the process of delivering his lecture, Braid spoke in some detail of six "sources of fallacy" that could contaminate findings.
In 1853, Braid investigated the phenomenon of "table-turning" and clearly confirmed Michael Faraday's conclusion that the phenomenon was entirely due to the ideo-motor influences of the participants,[REF] rather than to the agency of "mesmeric forces" - as was being widely asserted by, for example, John Elliotson and his followers [REF].