Overview

Physical mediumship sits at the crossroads of Spiritualism, psychical research, and parapsychology. Mediumship research broadly asks whether certain people can receive information about the dead. Physical mediumship goes further. The medium is said not just to know things, but to produce real, measurable events.

Spiritualists divide mediumship into two types. Mental mediums claim to sense or see the spirit world. Physical mediums are said to produce materializations, apports (objects that appear from nowhere), rapping sounds, and levitation. They are sometimes said to use a bodily energy or substance called ectoplasm to do this.^[8]

Physical mediumship spread widely from the mid-1800s onward, as the Spiritualist movement grew from America into Europe.^[1] The reported phenomena fascinated the public and drew serious scientists. The Society for Psychical Research, founded in 1882, began investigating these claims with scientific methods from its earliest years.^[9] But the history of physical mediumship is also, frankly, a history of fraud. Exposures and confessions of trickery piled up through the Victorian and Edwardian eras. Scientific interest fell sharply as a result.^[2]

Physical mediumship is fundamentally different from the kind of anomalous information transfer studied in mental mediumship research, ganzfeld experiments, or remote viewing. Those fields ask whether minds can pick up information by unusual means. Physical mediumship, if genuine, would mean a mind can directly move or alter physical matter. That would be a form of macro-PK, or large-scale psychokinesis. It would go well beyond abilities like telepathy, clairvoyance, or precognition. The stakes are high, which helps explain why the incentive to cheat was, and still is, substantial.

Major figures and cases

The most celebrated physical medium of the 1800s was Daniel Dunglas Home (1833–1886). He was a Scottish-born medium who reportedly levitated, handled fire without injury, and caused phantom hands to appear. Dozens of witnesses observed these events over a career of nearly 25 years.^[3]

In 1871, the prominent physicist and chemist Sir William Crookes put Home through instrumental tests. Crookes measured what he called an unexplained force and concluded the experiments showed the reality of a “psychic force” beyond doubt. His scientific peers widely ridiculed these conclusions.^[10] Unlike most physical mediums of his era, Home was never conclusively caught cheating. Even so, skeptics, including professional stage magicians, have proposed ordinary explanations for individual phenomena.^[3]

In the early 1900s, French physiologist and Nobel laureate Charles Richet coined the term ectoplasm in 1894 while co-investigating Italian medium Eusapia Palladino. He used the word to describe a substance he believed seeped from the medium’s body and could take physical form.^[4] Researchers Albert von Schrenck-Notzing and Gustave Geley later photographed similar phenomena with medium Eva Carrière, known as “Eva C.”^[11]

Later investigations showed that many of these displays were faked. The ectoplasm turned out to be swallowed and regurgitated cheesecloth, tissue paper with magazine cut-outs, or fabric attached by wires.^[2] Scottish medium Helen Duncan was one of the most famous ectoplasm producers of the 1930s. Investigator Harry Price seized a sample at a 1933 séance. Tests showed it was cheesecloth mixed with egg white.^[12] These repeated exposures drove a sharp decline in physical mediumship séances and in serious scientific attention to them.^[13]

Polish medium Franek Kluski drew attention in the 1920s through wax or paraffin casts said to be made from materialized hands and faces during séances. Researcher Michael Nahm’s 2023 review in the Proceedings of the Society for Psychical Research examined what Kluski’s materializations might mean for the question of survival after death. Nahm noted that modern technology offers new tools to study physical mediumship that were not available in the Victorian era.^[14]

The Scole Experiments

The most thoroughly documented modern physical mediumship investigation is the Scole Experiment, which ran from 1993 to 1998. It took place in the cellar of a farmhouse in Scole, Norfolk, England. The core group included researchers Robin and Sandra Foy and mediums Diana and Alan Bennett. All sittings were held in total darkness.^[6]

The group claimed many phenomena: moving lights that responded to requests, levitating objects, apports including old newspapers, images appearing on sealed photographic film, spirit voices, and materializations of human and animal forms.^[15]

By 1995, three senior SPR members were invited to observe. They were former SPR president Arthur Ellison, psychology professor David Fontana, and researcher Montague Keen. They attended more than 20 sittings over three years.^[5] Their 452-page report, called The Scole Report, was published in the SPR’s Proceedings in 1999. It expressed cautious support. The investigators said they were “unable to detect any direct indication of fraud or deception” and found evidence pointing to intelligent forces at work. But they also clearly stated that evidence for survival after death was “inconclusive.”^[5]

Critics pointed out serious problems with the conditions. The room was completely dark. The mediums, not independent scientists, set the rules. Video recording was banned. The wooden box used to hold photographic film was supplied by the mediums themselves. These conditions fell well short of what is needed to rule out trickery.^[6] Psychologist Richard Wiseman tested the film-image claim by securing blank film in an envelope he controlled himself. No images appeared. The phenomena were also never reproduced under independent conditions, which critics see as a decisive failure.^[16]

Skeptical critiques

Critique 1: Almost every investigated physical medium has eventually been caught cheating.

Skeptical investigators and historians of the field.^[2]

This is the most basic objection. Virtually every physical medium who faced rigorous investigation was eventually exposed as a fraud or found to be using ordinary materials. Lewis Spence wrote in his Encyclopaedia of Occultism that fraud plays a very large part in physical mediumship, and the sheer frequency of proven fraud has led many researchers to abandon the field entirely.^[17]

Evidence strength: The historical record of fraud is extensive and well-documented. This is one of the strongest objections to the field.

Critique 2: Séance conditions are ideal for deception and are controlled by the mediums, not by scientists.

Skeptical investigators and magicians.^[8]

Most physical mediumship takes place in darkness or near-darkness.^[8] Séances typically use props such as spirit trumpets, spirit cabinets, and levitation tables. These all have well-known uses in stage magic.^[8] Crucially, the conditions are set by the mediums themselves, who benefit from those conditions, not by independent investigators. At Scole, for example, restrictions on recording equipment were said to come from the “spirits” via the mediums. That is an obvious conflict of interest.^[6]

Evidence strength: This structural problem applies to nearly all physical mediumship cases on record. It is a serious and largely unanswered challenge.

Critique 3: Claimed phenomena such as levitation and full-body materialization are incompatible with known physics. Researchers like Crookes may have been misled.

Mainstream scientific community and historians of science.^[18]

The broader scientific community has questioned whether the claimed phenomena are even physically possible. Critics have also suggested that researchers like Crookes may have been subject to wishful thinking or to the social influence of charismatic mediums.^[18]

Evidence strength: Moderate as a general concern. The specific charge against Crookes is debated, but the broader physics objection is taken seriously by most scientists.

Responses and evaluation

Defenders of physical mediumship research accept that fraud is widespread. But they argue that fraud in some cases does not automatically invalidate all cases. They point to the idea of “mixed mediumship,” meaning a medium might cheat sometimes while producing genuine phenomena at other times. Eusapia Palladino is the most cited example. She was caught cheating with her feet on some occasions, yet multiple independent investigators reported phenomena that occurred under strict controls.^[19] Researcher Stephen Braude has argued in academic publications that the best-documented historical cases deserve serious consideration despite the fraud background.

Some researchers point to modern technology as the way forward. Full-spectrum video recording, infrared monitoring, tamper-evident materials, and acoustic analysis are all tools that did not exist in the Victorian era.^[14] The Institut für Grenzgebiete der Psychologie und Psychohygiene (IGPP) in Germany runs a historical studies program focused on what archival records of physical mediumship can still teach us.^[20]

Even so, mainstream parapsychology has largely moved on. The difficulty of running adequate controls, combined with a poor track record of replicable, fraud-proof results, has pushed researchers toward cleaner methods. Survival-related questions are now studied mainly through controlled mental mediumship studies, near-death experiences, and related topics where blinded protocols are practical.^[7] Physical mediumship sits in an unusual place in the history of science. It attracted Nobel laureates and fellows of the Royal Society. Yet its legacy of exposure has made rigorous investigation extremely hard to conduct and even harder to publish credibly.