Category: Recent Publications

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

I have met the editor of the book commented here, Dr. Gerhard Mayer, in conventions and have had email correspondence with him. He obtained a PhD in psychology from the University of Freiburg with a dissertation about how adolescents view movies about occult topics. Currently he works at the Institut für Grenzgebiete der Psychologie und Psychohygiene on cultural aspects of frontier fields, including parapsychology, shamanism, altered states of consciousness and astrology.

Gerhard Mayer 2

Gerhard Mayer

The book he has edited, N Equals 1: Single Case Studies in Anomalistics (Zurich: Lit, 2019, 397 pp.; click here; to order from the publisher click here), is a unique compilation of papers about the use of single case studies of various types of unexplained phenomena. Such as crop circles, hauntings, poltergeists, recurrent apparitions of the living, and UFOs. I am glad to be one of the authors in the book.

Mayer N Equals 1

Here is the table of contents:

Stephen E. Braude: Foreword

Steve Braude 4

Stephen E. Braude

Part I: General Considerations

Gerhard Mayer & Michael Schetsche: Introduction – Research Logic, Models, and Particularities

Carlos S. Alvarado: The Place of Spontaneous Cases in Parapsychology

Part II: Single Case Studies in Anomalistics

Gerhard Mayer & Michael Schetsche: Introduction: Single Case Studies in Anomalistics

Michael Schetsche

Michael Schetsche

Gerhard Mayer & Michael Schetsche: RSPK Investigations

Gerhard Mayer & Michael Schetsche: Cryptozoology & Crop Circle Research: Two Further Fields of Investigation at a Glance

Andreas Anton: UFO Research

Part III: Historical Case Studies

Michael Nahm: Historical Perspective: Justinus Kerner’s Case Study Into the “Prison Spook” in Weinsberg and Spooky Actions at a Distance in 1835–1836

Gerd H. Hövelmann, Carlos S. Alvarado, Massimo Biondi & Friedrike Schriever: The Case History as an Exemplar: The Recurrent Apparitions of Emélie Sagée

Gerd Hovelmann 2

Gerd H. Hövelmann

Gerd H. Hövelmann

Gerhard Mayer: The Bélmez Faces: An Investigation of a Supposedly Strong Case

Gerhard Mayer: The Authority Strikes Back: Considerations About the Allegedly Fraudulent “Chopper” Poltergeist Case

Part IV: Contemporary Case Studies

Gerhard Mayer: Case Report of the Investigation of a Strange Photographic Anomaly

Gerhard Mayer & Jürgen Kornmeier: Mysterious Objects in Pictures Taken by a Wildlife Camera: The Pitfalls of Perception

Jürgen Kornmeier

Gerhard Mayer: The “Castle Hotel” Case – Becoming a Haunting Myth and a “Lost Place”: An Investigation Report

Manuela v. Lucadou & Sarah Pohl: Dead Monks Walking: Methods and Experiences from the Parapsychological Counseling Centre (Freiburg/Germany) for Dealing with Poltergeist Phenomena

Renaud Evrard: The “Amnéville RSPK Case“: An Illustration of Social Elusiveness?

Renaud Evrard4

Renaud Evrard


About the Contributors


Can you give us a brief summary of the book?

This volume, N equals 1. Single Case Studies in Anomalistics, is intended to give an overview of the methodological peculiarities of anomalistic field research. Single case studies have a long tradition in the field of parapsychology and anomalistics research. Although case studies do not usually provide hard evidence for the existence of paranormal effects, they demonstrate the dynamics of occurrence of such extraordinary phenomena and experiences in the living world. On the basis of historical and current case studies, certain specific psychosocial dynamics and problems in this interesting and challenging field of research are presented and discussed.

N Equals 1 contains 15 chapters written by different authors on the subject of single case studies. Although the focus is on poltergeist cases, other fields of anomalistics are also addressed such as UFOs, cryptozoology, or allegedly photographic anomalies.

What is your background in the study of anomalies, and with the topic of the book specifically?

I have been working at the Institut für Grenzgebiete der Psychologie und Psychohygiene  in Freiburg/Germany since 1996. During my studies in psychology, I was interested in qualitative research approaches because they offer a greater proximity to everyday life and a different view of the phenomena under investigation. This is particularly important for parapsychology and anomalistics because paranormal effects in the laboratory rarely occur spectacularly. Furthermore, they seem to have nothing to do with such phenomena and extraordinary experiences made in, and reported from the living environment. Careful examination of single cases can provide information about contextual conditions of their occurrence and give input for improving experimental research and theory building. I have had the opportunity to be part of the examination of several single case studies in the field. Some reports found their way into the book.

What motivated you to write this book?

The first edition mainly consisted of texts by my colleague Michael Schetsche and me. Since that time, I expanded the research with new as well as old cases to represent specific topics, such as  the role of mass media or the social dynamics. During my translation of the German text, I became interested in going deeper into the reconstruction of some historical cases such as the famous one about the Bélmez faces. This volume, accordingly revised, is a considerably extended version of a German edition published in 2011. I wanted to enrich the book with the work of other authors on this topic. And I wanted to reach a larger readership by publishing it in English.

Why do you think your book is important and what do you hope to accomplish with it?

Single case studies in parapsychology and anomalistics have only been seen as illustrative or anecdotal. In recent years, the value of single case studies for gaining knowledge about anomalistic phenomena and the conditions under which they occur has been increasingly recognized with a wider acceptance of qualitative research methods in general. The book is intended to provide a building block for the appreciation of this type of research as an equivalent complement to laboratory research. In addition, the case reports clarify methodological peculiarities that involve field investigations in anomalistics. Furthermore, contemporary and historical case material is presented to English-speaking readers for the first time in this detailed form. Last but not least, the case studies and methodological considerations presented in this volume are intended to correct the publicly dominant picture of what a scientific investigation of paranormal phenomena looks like, which much of the time is characterized by so-called paranormal investigations by amateur ghost hunters.


Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

Those of you who follow my work know of my interest in neo-mesmerism, or the late mesmeric movement popular during the last quarter of the Nineteenth-Century, and even later (click here, and here ). In the article discussed here I focus on a fascinating figure from France, neurologist Jules Bernard Luys.

Jules Bernard Luys

Jules Bernard Luys

Alvarado, C.S. (2019). Classic text No. 119: Jules Bernard Luys on magnetic pathology. History of Psychiatry, 30, 359–374. (a PDF version of this article is available on request:


“In the mesmeric movement, one of the phenomena cited to defend the existence of magnetic and nervous forces was the visual perception of them in the form of luminous emanations from people, or effluvia. This Classic Text is an 1892 article by French neurologist, Jules Bernard Luys (1828–97), about the observation of such effluvia by hypnotized individuals. Interestingly, the luminous phenomena perceived from mentally diseased individuals and from healthy ones had particular properties. Luys’s interest in this and other unorthodox phenomena were consistent with ideas of animal magnetism in the late neo-mesmeric movement, as well as with some physicalistic conceptions of hypnosis and the nervous system held at the time.”

In addition to Luys, some of the figures that participated in the French neo-mesmeric movement were Alexandre Baréty (1844–1918), Émile Boirac (1851–1917), Albert de Rochas (1837–1914), and Hector Durville (1849–1923). “For example, Baréty defended the existence of a neuritic (neurique) force that originated ‘probably from the nervous system, which circulates along the nerves or radiates out of them … and is susceptible of producing certain sensitive, motor and psychic modifications on other human bodies.’ ”

Barety Magnetisme Animal


de rochas Forces Non Definies

Durville Traite Experimental Magnetisme Jules Bernard Luys (1828–1897) was a well-known French neurologist who worked at La Charité, an important hospital in Paris. His work was highly regarded. For example, his book Recherches sur le Système Cérébro-Spinal, sa Structure, ses Fonctions et ses Maladies (1865) was awarded a prize by the Académie des Sciences. In a addition to a great number of articles in medical journals he also published other books about neurology: Iconographie Photographique des Centres Nerveux (2 vols, 1873), Études de Physiologie et de Pathologie Cérébrale (1874), and Leçons sur la Structure et les Maladies du Système Nerveux (1875). His work was rewarded with the titles of Knight and Officer in the Légion d’Honneur, and by his election to the Académie de Médicine.

In later years Luys was interested in hypnosis, as seen in his Hypnotisme Expérimental: Les Émotions dans l’État d’Hypnotisme et l’Action à Distance de Substances Médicamenteuses ou Toxiques (Experimental Hypnotism: Emotions During the State of Hypnotism and the Action of Medical and Toxic Substances at a Distance, 1890). In his later research period Luys was interested in the action of medicines and drugs at a distance, as well as in the magnetic force of the mesmerists, claiming that he had patients that could see the magnetic force while hypnotized, and that he had been able to capture the elusive force on photographic plates. Unfortunately, this work was not well received by the medical establishment. As I stated in the paper: “These studies were not received as well as Luys’s previous physiological research had been. In fact, it was even said that because of this work Luys lost some of his scientific reputation.”

Luys Hypnotisme

Luys Esther

Esther, One of Luys’ Hypnotic Subjects

In my paper I reprint an article Luys published in 1892 entitled “De la Visibilité par les Sujets en État Hypnotique des Effluves Dégagés par les Êtres Vivants” (On the Visibility to Subjects in the Hypnotic State of Effluvia Emitted by Human Beings published in Annales de Psychiatrie et d’Hypnologie dans leurs Rapports avec la Psychologie et la Médicine Légale, 1892, 2, 321–323). “The phenomena described by Luys were in the mesmeric tradition. It may be argued that they also belonged to ideas about the aura, or the perception of various luminous shapes around the human body reported by non-hypnotized individuals such as mediums, psychics and others, a topic discussed frequently over the years. The aura, according to some writers, reflected the mental and physiological state of the person around whom it was seen, an idea also espoused by Luys.”

Luys Annales

Part of Luys’ article read as follows:

“Not only do hypnotized subjects have the attribute of seeing the magneto-electric effluvia which emerge from physical devices . . . but they can also . . . recognize the effluvia that are released from the eyes, ears, nostrils and the lips of living beings – [and can] distinguish them, those on the right side and those on the left side, putting the blue colour on the left and red on the right. Thus they distinguish in the human body and in animals a half which corresponds to the north pole, and another half which corresponds to the south pole of a magnetic bar or of a magneto-electric apparatus . . .”

“The hypnotized subject, whose eyes have been prepared and verified by the assistance of . . . ophthalmoscopic examination . . . can thus be employed as a real living reagent to recognize the differences in the coloration of the effluvia on the left side and those on the right side. In healthy, well men, the irradiated effluvia of the eye and the organs of the senses of the left side appear with a very intense blue coloration – those on the right side with a red carmine coloration. The intensity of the emitted effluvia seems to indicate the maximum energy of the nervous forces – indeed:”

“In hemiplegics, the effluvia irradiated from the eye of the paralysed side are very weak.”

“In chronic tabetics, very markedly weakened, the intensity of the effluvium is greatly diminished on both sides.”

“In neuropaths and in hysterics of both sexes, the red coloration of the effluvia of the right eye becomes violet; this is a diagnostic sign which in certain cases has allowed me to detect states of latent hysteria, and the eyes of these subjects appear incapable of moving upwards until they can form a red color. The effluvia of the ears, nostrils and lips maintain their red coloration.”

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

The authors of a recently published article explore cultural aspects of dissociation in mediumship: Everton de Oliveira Maraldi, Ricardo Nogueira Ribeiro, and Stanley Krippner, Cultural and Group Differences in Mediumship and Dissociation: Exploring the Varieties of Mediumistic Experiences. International Journal of Latin American Religions, 2019, 3, 170-192. (for reprints write to the first author:


“The mental state of mediums has often been explained in the anthropological, psychological, and psychiatric literature in terms of dissociative trance. Even though mediumistic experiences involve, by definition, many of the elements of experiences referred to as dissociative, there is some controversy about the role played by dissociation in mediumistic practices and there are few cross-cultural studies on the phenomenology of mediumship. Despite its influential contributions to elucidating the clinical and neurophysiological correlates of dissociative experiences, the biomedical model has been criticized for its emphasis on psychopathological aspects of experience and the superficial consideration of cultural and psychosocial factors at the origin of mediumistic experiences, particularly in non-clinical contexts. In this paper, we review the evidence pertaining to a series of psychiatric and anthropological investigations of mediumship carried out in Brazil and abroad in order to illustrate how group and cultural differences impact the phenomenology, definitions, and meanings attributed to mediumistic experiences. To do so, we explore the differences that exist (1) between mediums from the same religious affiliation, (2) between mediums from different affiliations, and (3) between mediums from different cultural contexts, focusing on a comparison of cases from Brazil and the UK. We argue that mediumistic experiences and beliefs are highly variable across (and even within) cultures to support a single and monolithic classification. Based on multiple evidentiary sources, we challenge the pathologically oriented biomedical model of mediumship by pointing out the complexity and diversity of these experiences and mediumship’s many cultural interpretations and phenomenological variations. We conclude with a discussion of the implications of the studies reviewed for the definition of mediumship in terms of dissociation and trance.”

The authors conclude:

“Our emphasis in this paper was in the phenomenological characteristics of mediumistic experiences and the many relations between mediumship and dissociation. However, several other aspects of mediumship deserve also a detailed psychological and anthropological analysis, such as the relationship of the mediums with the spiritual entities, mediums’ beliefs about the afterlife, the medium’s social role and status within the group, and the impact of institutional dynamics in the practice of mediumship.”

“Many other cultures not mentioned here could be compared in their varieties of mediumship practice, including other countries in Latin America, such as Cuba and Argentina. Future studies could eventually benefit from the same comparative model of analysis to reflect on the diversity of mediumistic practices around the world. We hope that the discussion raised in this work will promote a constructive debate about the viability of concepts such as trance and dissociation in the understanding of experiences deemed mediumistic.”

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

Here is a new article discussing phenomena believed to present evidence against materialism: Toward a Postmaterialist Psychology: Theory, Research, and Applications,” by Mario Beauregard, Natalie L. Trent, and Gary E. Schwartz (New Ideas in Psychology, 2018, 50, 21–33; for a PDF of the article click here).

Mario Beauregard

Mario Beauregard

Natalie L. Trent

Natalie L. Trent

Natalie L. TrentNatalie L. Trent 2

Gary Schwartz


“The majority of mainstream psychologists still adopt a materialist stance toward nature. They believe that science is synonymous with materialism; further, they are convinced that the view that mind and consciousness are simply by-products of brain activity is an incontrovertible fact that has been demonstrated beyond reasonable doubt. This is an incomplete view of what humans are. In this article, we review two categories of empirical evidence that support a shift toward a postmaterialist psychology. The first category of evidence includes mental events that seem to occur outside the spatial confines of the brain, whereas the second category includes mental events that seem to occur when the brain has ceased to function. Taken together, the two bodies of empirical evidence examined here indicate that the idea that the brain creates mind and consciousness is both incomplete and flawed. In the Discussion section, we argue that the transmission hypothesis of the mind-brain relationship can account for all the evidence presented in this article. We also discuss the emerging postmaterialist paradigm and its potential implications for the evolution of psychology.”

The authors argue that “the scientific materialist framework is completely at loss to explain a wide array of empirical phenomena that are thoroughly examined in this article.” They discuss ESP and near-death experiences, and other phenomena such as distant mental influence and reincarnation cases.

It is stated that psychology will be affected in different ways if a materialistic paradigm is rejected:

“Allowing for research from a postmaterialist perspective would impact many subfields within psychology. Not only would a postmaterialist paradigm allow for research to extend further into the potential of the mind, it would do so with an understanding of our interconnection, thereby moving forward in an ethical, holistic way . . . With respect to abnormal psychology, the belief in psi phenomena is currently classified as a symptom of a mental disorder, such as schizotypal personality disorder. A postmaterialist paradigm would recognize that many people do experience psi phenomena, and that these phenomena are not necessarily the products of delusions or pathological belief systems. Furthermore, a postmaterialist paradigm would take into account the enormous power of spirituality and mystical experiences to fundamentally transform one’s life in a positive way . . . As regards social psychology, adopting a postmaterialist paradigm would allow for deeper research into our interconnection and social bonds that may transcend the physical boundaries assumed by scientific materialism . . . The implications of postmaterialist paradigm also extend to crosscultural psychology, whereby other cultural belief systems often correspond to a non-materialist perspective . . . A postmaterialist paradigm can also create a bridge between modern medicine and traditional forms of medicine . . .”

It concluded that:

“Scientific materialism still continues to exert substantial influence in the academic world. QM and the numerous lines of converging empirical evidence discussed here, however, strongly suggest that this ideology is incomplete, erroneous and obsolete: the time is indeed ripe to embrace a broader and more inclusive postmaterialist conception of the world.”

“The history of science has been marked by a few special moments that were characterized by major conceptual breakthroughs that have been called paradigm shifts or changes . . . It appears that we are now approaching another crucial paradigm shift, namely the transition from materialist science to postmaterialist science. We may be witnessing the end of materialism . . . , at least as originally conceived. Holding great promise for science, this transition may be of vital importance to the evolution of the human civilization. Toward this end, a group of postmaterialist scientists . . . have founded a global Academy for the Advancement of Postmaterialist Sciences to foster theory, research, and applications in all branches of science.”



Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

In a recently published article Zofia Weaver summarizes the psychical research contributions of Polish philosopher and psychologist Julian Ochorowicz (1850-1917):

Julian Ochorowicz and His Contribution to Psychical Research. Journal of Parapsychology, 2019, 83, 69-78.

Abstract: The purpose of this paper is to present the contribution of Julian Ochorowicz to the field of psychical research. From early youth Ochorowicz was interested in psychology, particularly in magnetism, hypnotism and mental suggestion, and his experience in these areas influenced his theoretical approach to the subject. His passionate belief that the essence of true science had to be to establish facts before forming conclusions led him to investigate a number of mediums, including
Eusapia Palladino and Stanisława Tomczyk.

Julian Ochorowicz 2

Julian Ochorowicz


Ochorowicz Suggestion mentale

Ochorowicz Mains Tomczyk

Article About Ochorowicz’s Studies of Medium Stanislawa Tomczyck in the Annales des Sciences Psychiques, 1912

The author ends her paper stating:

“Ochorowicz was very much a ‘hands on,’ practical investigator, pursuing every manifestation as far as possible, inventing devices for excluding fraud, and examining every possible and impossible explanation to its logical conclusion in his search for the truth. However, in his pursuit of facts he tended not to allow for the possibility of different interpretations, and in particular was not aware of the ‘experimenter effect’ his powerful personality might produce. In his impatience for answers he would construct theoretical explanations prematurely and without detail, something he acknowledged himself in his later writings . . . Working with the model of the world current at that time, he tried to go beyond it, yet in some respects perhaps he was not so much wrong as ahead of his time, as in his exploration and application of the idea that energy could not be destroyed, only transformed. But perhaps his most important contributions were as an innovative experimenter and a ‘science activist,’ who had the courage to keep pushing at the boundaries of current worldviews, always asking, ‘What is impossible?’ ”

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

I first met the author of this book, James G. Matlock, when I was a Research Assistant for the late Ian Stevenson at the Division of Parapsychology (now Division of Perceptual Studies) of the University of Virginia. One of our first encounters was when he came to visit our offices sometime in 1985 or 1986 to talk to Dr. Stevenson. Since then, he has been a friend with whom I have had countless conversations about parapsychology over the years. From the beginning he had a special interest in reincarnation, but also on other topics I also acknowledge as my own: the history of parapsychology and the study of spontaneous cases in general.

James G. Matlock

James G. Matlock

Jim has been busy over the years. He worked at the American Society for Psychical Research and at the Rhine Research Center, and is a Research Fellow at the Parapsychology Foundation. In addition, he has a PhD in Anthropology from Southern Illinois University (Carbondale). A list of his  published articles about reincarnation, and other topics, appears here.

In addition, he is the co-author, with Erlendur Haraldsson, of I Saw A Light And Came Here: Children’s Experiences of Reincarnation (Hove, UK: White Crow Books, 2016).

Haraldsson Matlock I Saw a Light

The book Jim comments on here has been in his mind for many years, at least since the days I first met him. Signs of Reincarnation: Exploring Beliefs, Cases, and Theory (Lanham, MD: Rowman & Littlefield, 2019) is a veritable textbook about the concept of reincarnation and research on the subject covering historical, anthropological, psychological, and parapsychological aspects. The book is also an overview of explanatory models. Including the author’s. Furthermore, Signs of Reincarnation is also a defense of the concept of survival of death, of the need to go beyond materialism to account for the best cases.

Matlock Signs of Reincarnation

In my view Signs of Reincarnation is the most comprehensive overview of the subject, and one that considers the topic in relation to other phenomena. It is, in fact, a handbook for the scientific and scholarly study of reincarnation. Furthermore, the book includes a Foreword by Jeffrey Mishlove and an Afterword by Michael Nahm about the implications of reincarnation cases for biology.

Table of Contents

Foreword: A Tale of Two Theories, by Jeffrey Mishlove


Chapter 1: Introduction to the Study of Reincarnation Signs
What is Reincarnation?
Challenge to Materialism

Chapter 2: The Belief in Reincarnation
Signs, Beliefs, and Customs in Animistic Cultures
A Brief History of the Belief in Rebirth, West and East
Karma, God, and the Individual in Rebirth Theory

Chapter 3: Research Methods and Interpretative Frames
Accounts of Past-Life Memory Recorded Before 1960
Ian Stevenson’s Field Research and Its Critics
Interpretive Frames for Reincarnation Cases

Chapter 4: Child Studies: The Principal Signs of Reincarnation
Involuntary Memory of Previous Lives
Behavioral Identification with the Previous Person
Birthmarks and Other Physical Signs

Chapter 5: Child Studies: Secondary Signs of Reincarnation
Signs of Discarnate Agency
Universal, Near-Universal, and Culture-Linked Patterns
The Psychological Impacts of Past-Life Memory

Chapter 6: Past-Life Recall in Adulthood and Third-Party Reports
Developmental Factors in Past-Life Memory Retrieval
Fantasy and Fact in Past Life Regression under Hypnosis
The Contributions of Shamans, Psychics, and Mediums

Chapter 7: The Process of Reincarnation
Beyond Materialism
Personal Identity and Postmortem Survival
Reincarnation and Life

Afterword: Implications of Reincarnation Cases for Biology, by Michael Nahm

Glossary of Specialized and Technical Terms


* * * * *


Can you give us a brief summary of the book?

Signs of Reincarnation opens with the report of a “solved” (verified) American case of past-life memory involving a person not known to the child subject’s family, a rarity in the literature. I then discuss beliefs in and about reincarnation in different religions and thought traditions before turning to a systematic review of findings from over 2,500 investigated cases. I consider various ways the evidence may be interpreted but find that none are as satisfactory as reincarnation and move on to develop a theory of how it might work.

My processual soul theory rejects Cartesian substance dualism as incompatible with the case data and embraces a process metaphysics position that holds that what survives is simply a stream of consciousness continuous with that of embodied life. Reincarnation is best thought of in terms of possession, I argue. Although it means letting go of the materialist idea that consciousness is generated by the brain, my model does not require the acceptance of any radically new concepts or the abandonment of well-established findings in mainstream psychology or biology.

What is your background in parapsychology, and with the topic of the book specifically?

When I was about six years old, I witnessed something that got me thinking about the possibility of postmortem survival. I was standing slightly apart from a group of two boys and a girl. She was in the middle, they on either side of her. She was talking about a ghost she had seen, and they were ridiculing her, telling her that there was no such thing as a ghost. “There is too!” she insisted over and over, the volume of her voice rising each time. My reaction, thinking to myself, was, she is so certain that there are ghosts, perhaps there are ghosts. How can we be sure that there are no ghosts, if some people see them?

From early in my childhood, I wanted to be a creative writer, and in college I majored in English and minored in psychology. This was the early 1970s, but B.F. Skinner’s operant conditioning was still being taught in my experimental psychology classes. I wasn’t sure I accepted the Skinnerian perspective, though. I recall asking my mother shortly after my graduation in 1977 if children were born with personalities or acquired them as they grew up. She told me that each child was born with a different personality, and the personalities became stronger as the children aged. I was one of five children, so I figured she knew what she was talking about, and that was all I needed to let go of Skinner.

I started reading the New Age literature that was coming out in the 1970s and around 1980, picked up my first book on reincarnation. I had not previously thought much about it, but I had seen the theme of rebirth coming up repeatedly in short stories and novels, and was intrigued by the concept. It did not take me long to find Stevenson’s books, which led me into parapsychology and changed the direction of my life. I joined organizations and subscribed to journals. I started attending meetings of the Parapsychological Association, my first at Tufts in 1985. My first publication in the field, in 1986, was a review of D. Scott Rogo’s The Search for Yesterday: A Critical Examination of the Evidence for Reincarnation.

During the same period, I was finding it more difficult than I had imagined to make a living writing fiction and enrolled in library school, intending to specialize in archives. I undertook a survey of archival resources in parapsychology, the basis of a paper published in the Journal of the American Society for Psychical Research in 1987. That survey also led to my first job in parapsychology, as Librarian and Archivist at the ASPR. When I left there I pursued doctoral studies in anthropology, but I returned to parapsychology later, as a staff member of the Rhine Research Center in Durham, North Carolina.

Many of my early contributions to parapsychology concerned the history of the field, but I continued to read and write about survival topics, especially reincarnation. Gradually reincarnation took over as my core interest and has remained so. In 2016, field researcher Erlendur Haraldsson invited me to co-author I Saw a Light and Came Here: Children’s Experiences of Reincarnation. I have also written (at present count) eleven articles on reincarnation-related topics for the Psi Encyclopedia. For a list of my publications in parapsychology and anthropology, click here. In the fall of 2017, I sat with Jeffrey Mishlove for a series of twelve conversations about reincarnation research for his New Thinking Allowed video series on YouTube.

What motivated you to write this book?

For many years, I wanted to write a book about reincarnation, but the more I studied the topic, the more I came to feel that I was not yet ready to take it on. When I did think seriously about the project, I could not decide on a structure that would allow me to say all I wanted to say. That changed when Nancy Zingrone asked me to develop a semester-long Masters-level course on reincarnation for a new program in parapsychology at Atlantic University. I began working on course lectures with the idea of eventually publishing them as a book. When Atlantic cancelled its parapsychology program, and Nancy left the school, I went with her, but continued to develop my course and then to teach it online through the Alvarado Zingrone Institute for Research and Education (for information about the course click here). I did not teach the course in 2018, so as to have time to finish this book, which will serve as the course textbook going forward. I plan to resume offering the course this August.

Why do you think your book is important and what do you hope to accomplish with it?

The semester-long lecture format gave me the structure I needed to explore all aspects of the reincarnation problem, from the many ways humanity has conceived of rebirth, to case studies and other research, to trying to understand the process without rejecting the findings of mainstream psychology and biology. Signs of Reincarnation is the first book to cover the topic systematically from all these angles, in a scholarly way. It lays out where we are now and provides a baseline for future work.

The book touches on and has relation to several fields, ranging from consciousness studies to anthropology to religious studies and philosophy. It is written for a college-level audience in the hopes of introducing students to this research before they are settled into their careers. I would like also to educate the larger academic community about the research, and I would like to see parapsychologists grapple with the ideas I present concerning postmortem survival and psi.

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

An important new study about physiological and medical aspects of mediumship has been published by Julie Beischel, Shawn Tassone  and Mark Boccuzzi. Here is the abstract:

Hematological and Psychophysiological Correlates of Anomalous Information Reception in Mediums: A Preliminary Exploration. Explore: Journal of Science & Healing, 2019; 15, 126-133.


“Context: Modern research with mediums—individuals who regularly experience and report communication from the deceased—includes investigations of mediums’ accuracy, psychology, phenomenology, and electrophysiology and the therapeutic potential of mediumship readings for the bereaved. Anecdotal reports imply that chronic medical problems may be a serious concern for mediums.”

“Objective: The aim of this study was two-fold: (I) to systematically investigate the hematological and psychophysiological correlates of anomalous information reception (AIR, the reporting of accurate and specific information about the deceased in the absence of prior knowledge, feedback, or deceptive means) and (II) to compare the reported health issues of mediums and non-mediums.”

“Design: (I) A repeated-measures design in which mediums engaged in blinded mediumship readings and a control condition was used. (II) A parallel-groups design was used to compare mediums’ and non-mediums’ responses to an anonymous online survey regarding their health issues.”

“Participants: (I) Data was collected from five Windbridge Certified Research Mediums. (II) Survey responses from 125 mediums were compared to responses from 222 non-mediums.

Main Outcome Measures: (I) General physiological measures and 28 hematological elements were assessed. (II) Reports regarding autoimmune disease diagnoses and specific ailments by organ system were collected.”

“Results: Novel findings from this study included the following: (I) No significant hematological or physiological changes were seen in the mediums when pre- and post-condition comparisons were made for the counter-balanced sessions. (II) Compared to non-mediums, more mediums reported having at least one autoimmune disease (35.2% vs. 18.9%; p = 0.00076; z = 3.37; h = 0.4). Mediums also reported experiencing more health issues than did non-mediums (8.08 ± 5.38 vs. 5.09 ± 4.17 symptoms; p < 0.000001, g = 0.6). Specifically, more mediums than non-mediums (all p < 0.004) reported water retention (19.2% vs. 5.0%, z = 4.23, h = 0.5), bruising easily (20.0% vs. 9.0%, z = 2.93, h = 0.3), gastrointestinal issues (35.2% vs. 18.5%, z = 3.48, h = 0.4), headaches/migraines (26.4% vs. 11.3%, z = 3.63, h = 0.4), asthma (20.0% vs. 9.0%, z = 2.93, h = 0.3), food intolerances (28.0% vs. 9.9%, z = 4.37, h = 0.5), and sleep disturbances (40.8% vs. 14.9%, z = 5.41 h = 0.6). The proportions of participants reporting exophthalmos, chronic fatigue syndrome, and ankle sprains were not different.”

The authors summarize their results in the conclusion. They state that the mediums obtained “accurate and specific information about the deceased” and that there were no significant relationships with hematological and physiological variables. Furthermore:

“The findings from this study did demonstrate, however, that the mediums surveyed reported a significantly higher disease burden than non-mediums regarding specifically autoimmune disease, water retention, bruising easily, gastrointestinal issues, headaches/migraines, asthma, food intolerances, and sleep disturbances. These reports are in line with those of Assailly . . . who also found high levels of water retention, bruising easily . . . , and gastrointestinal issues in the mediums he examined though he did not compare his sample to a non-medium control group. The mediums in the current study also reported significant sleep disturbances and food intolerances whereas Assailly found that digestion issues and lack of sleep ‘appeared as negligible factors’ . . . In addition, although Assailly noted that the mediums in his study often reported exophthalmos (bulging eyes) and ‘complained of ‘twisting their ankles at every turn,’ these symptoms were not reported by the mediums in the current study.”

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

The Journal of Parapsychology, founded in 1937, had its 80th anniversary in 2017, a date commemorated with the publication of a special issue of the journal (2018, Vol. 82, Supplement). The issue starts with Etzel Cardeña’s editorial, “Four Score (Plus) Years Ago,” where he states:

Etzel Cardena 5

Etzel Cardeña

“Among their many achievements, Joseph Banks Rhine and collaborators launched The Journal of Parapsychology (JP) in 1937, the foremost venue for experimental research on parapsychology and sur­passed in longevity only by the Journal of the Society for Psychical Research. There had been important experiments in parapsychology preceding the Rhine era, but during the latter experimental parapsy­chology was established more solidly. The eighty-plus years of JP issues would constitute an extraordi­nary achievement in any field, but is even more remarkable in such a contentious area as parapsycholo­gy. To avoid repeating mistakes one should be cognizant of the field’s previous history . . . and even a cursory look at the JP indexes shows how the field has developed throughout the years. My intention for this Supplementary E-issue was to give a bird’s eye view of the coverage in the JP.”

JP 1937 First Issue

First Issue of the Journal of Parapsychology


This is followed by two overview articles:

John Palmer

80 Years of the Journal of Parapsychology: An Historical Overview

John Palmer 3

John Palmer

Abstract: In this invited article, the author reviews the history of the Journal of Parapsychology from its inception in 1937 to 2017. The focus is on published controversies and debates with critics outside the field of parapsychology, JP publication policy, and the changes in editorship.

Journal of Parapsychology 5

Carlos S. Alvarado

Eight Decades of Psi Research: Highlights in the Journal of Parapsychology

Abstract: This is a short review of the 80 years of existence of the Journal of Parapsychology. Found­ed in 1937, the journal articulated the experimental research program of J. B. Rhine and his asso­ciates at Duke University. Highlights of the journal are discussed, starting with examples of articles reporting experiments of extrasensory perception and psychokinesis. Also discussed are articles about spontaneous cases, the presentation of novel and creative approaches, critiques and discus­sions, overviews of the field, J. B. Rhine’s use of the Journal of Parapsychology to prescribe for the field, and concepts and theories. The Journal of Parapsychology is seen as an important influence in the development of parapsychology.

In my paper, I concluded:

“The appearance of the JP represents a change from the psychical research tradition that existed in the United States and elsewhere before the late 1930s, which was dominated by the study of cases and of mediumship . . . Although the research program of J.B. Rhine and his associates was to some extent a reinstatement of earlier interest in experimentation, the JP greatly assisted the devel­opment of parapsychology. This was accomplished by providing a forum that assisted processes such as the standardization of techniques to assess chance, controls for contaminating factors such as sensory cues, and terminology in parapsychology . . . Like every good scientific journal, the JP also facilitated communication between researchers and others in the field helping to disseminate ideas and encourage professional attitudes. The presentation of informa­tion, in the form of reviews of the literature, and book reviews (not discussed in this paper) has made the journal an essential reference source over the years for researchers, students, and others. One hopes that this tradition of excellence and dedication continues beyond this anniversary as parapsychology moves to new horizons.”

The Journal of Parapsychology V36 No 1 March 1972 ESP Precognition Research NC

The editor also reprinted various articles originally published in the JP. These were:

Some Basic Experiments in Extra-sensory Perception: A Background (1937)

By Joseph Banks Rhine

J.B. Rhine 2

J.B. Rhine

Spontaneous Telepathy and the Problem of Survival (1943)

By Gardner Murphy

Gardner Murphy 3

Gardner Murphy

Subjective Forms of Spontaneous Psi Experiences (1953)

By Louisa E. Rhine

Louisa Rhine

Louisa E. Rhine

Precognition of a Quantum Process (1969)

By Helmut Schmidt

Helmut Schmidt

Helmut Schmidt

Studying Individual Psi Experiences (1970)

Gertrude R. Schmeidler

Gertrude Schmeidler

Gertrude R. Schmeidler

A Joint Communiqué: The Psi Ganzfeld Controversy (1986)

By Ray Hyman and Charles Honorton

Ray Hyman

Ray Hyman

Charles Honorton

Charles Honorton

An Assessment of the Evidence for Psychic Functioning (1995)

By Jessica Utts

Jessica Utts 4

Jessica Utts

Mind Matters: A New Scientific Era (2008)

By Roger D. Nelson

Roger Nelson 3

Roger D. Nelson

Those of you interested in the history of the JP may want to consult the following sources:

journal of Parapsychology 7

Alvarado, C.S. (2011). Prescribing for parapsychology: Note on J.B. Rhine’s writings in the Journal of Parapsychology. Australian Journal of Parapsychology, 11, 89–99.

Alvarado, C.S. (in press). Journal of Parapsychology. In R. McLuhan (Ed.), Psi Encyclopedia. London: Society for Psychical Research.

Alvarado, C. S., Biondi, M., & Kramer, W. (2006). Historical notes on psychic phenomena in specialised journals. European Journal of Parapsychology, 21, 58-87.

Broughton, R. S. (1987). Publication policy and the Journal of Parapsychology. Journal of Parapsychology, 51, 21-32.

Mauskopf, S.H. (1987). The origin of the Journal of Parapsychology. Journal of Parapsychology, 51, 9-19.

Mauskopf, S.H., & McVaugh, M.R. (1980). The Elusive Science: Origins of Experimental Psychical Research. Baltimore: John Hopkins University Press.

Palmer, J. (1987). Controversy and the JP. Journal of Parapsychology, 51, 33-48.

Pope, D.H., & Pratt, J.G. (1942). Five Years of the Journal of Parapsychology. Journal of Parapsychology, 6,  5-19.

Rao, K.R. (1987). Editorial: The Journal of Parapsychology: The first and the next fifty years. Journal of Parapsychology, 51, 1-8.

Rhine, J.B. (1946). Editorial: The first ten years of the journal. Journal of Parapsychology, 10, 221-223.

Rhine, J.B. (1956). Editorial: The Journal’s first twenty years. Journal of Parapsychology, 20, 263-266.

Rhine, J.B. (1961). A quarter century of the Journal of Parapsychology: A brief review. Journal of Parapsychology, 25, 237-246.

Rhine, J.B. (1977). A backward look on leaving the JP. Journal of Parapsychology, 41, 89-102.

Zingrone, N.L. (1988). Authorship and gender in American parapsychology journals. Journal of Parapsychology, 52, 321-343.

Journal of Parapsychology 9

Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation

In my last published article I focus of various aspects of materialization phenomena with mediums: Alvarado, C.S. Musings on Materializations: Eric J. Dingwall on “The Plasma Theory” (Journal of Scientific Exploration, 2019, 33, 73–113; available here or from the author: Here is the abstract:

“The psychical research literature has many examples of séance room materialization phenomena. This article consists of a reprint of, and a commentary about, Eric J. Dingwall’s paper “The Plasma Theory,” published in the Journal of the American Society for Psychical Research in 1921. Dingwall discussed some of the previously published ideas on the topic, and emphasized those related to mediums Eva C. and Kathleen Goligher. The purpose of the current article is not to provide evidence for the phenomena, but to present relevant contextual information about the article, additional bibliography, and theoretical concepts, some of which are forgotten today.”

Eva C 8

Eva C.

Kathleen Goligher 2

Kathleen Goligher

I start saying: “One of the phenomena of physical mediumship is materializations, or appearances of ephemeral bodies (or parts of), and other forms, or things, in the séance room. This includes the production of ectoplasm, a subtle matter assuming various shapes and appearances—such as mists, plaster, and textile-like products—that may change into things such as hands, faces, and whole bodies. The topic flourished in previous eras and is largely ignored today by parapsychologists, particularly in terms of research. This is in part due to its association with fraud . . . and the lack of mediums who produce the phenomenon, or who are willing to be investigated under controlled conditions. Nonetheless, some current students of materialization believe there is evidence for the occurrence of the phenomenon . . .” 

Before I present a reprint of the text of Eric J. Dingwall’s article, I introduce the topic in a section discussing 19th and early 20th century materialization literature. The first subsection is about the variety of materializations. “Many accounts were about mediums such as Catherine E. Woods . . . , Florence Cook . . . , William Eglinton . . . , Francis Ward Monck . . . , the Eddy Brothers . . . , and Kate Fox . . . , among many others . . . .”


William Eglinton

Florence Cook 2

Florence Cook

Francis Ward Monck 2

Francis Ward Monck

“A classic case of full-body materialization was Katie King, which appeared in the presence of medium Florence Cook . . . Many were the reports of appearances of limbs and faces. Hands were common, as seen with Eusapia Palladino . . . In addition to full-body appearances, and the appearance of faces and limbs, there were reports of less precise forms as well that may be considered manifestations of what was latter called ectoplasm, which is the topic of Dingwall’s article. Perhaps the most common form of Nineteenth-Century ectoplasm was that of clouds or nebulous formations, such as those observed with Monck . . .  In D. D. Home’s séances there were reports of a ‘small white cloud without any well-defined shape’ and of a ‘luminous cloud-like body’ . . . On one occasion, according to Crookes, a hand was seen ‘ending at the wrist in a cloud.’ ”

Katie King 2

Katie King

Katie King 5

William Crookes and Katie King

“There were also many discussions of materializations during the first decades of the Twentieth Century, as seen in the writings of Gambier Bolton . . . , Paul Gibier . . . , Enrico Imoda . . . , Enrico Morselli . . . , and Charles Richet . . . Of particular importance was the work of French sculptress Juliette Alexandre-Bisson . . . , German physician Baron Albert von Schrenck-Notzing . . . , French physician Gustave Geley . . . , and New Zealand–born mechanical engineer William J. Crawford . . . . Their descriptions of ectoplasm provided much information about this mysterious substance.”

Juliette Alexandre Bisson

Juliette Alexandre Bisson

William J. Crawford

William J. Crawford

In this section I cited many fascinating publications such as:

Adare, Viscount (1869). Experiences in Spiritualism with Mr. D. D. Home. London: Thomas Scott.

Adshead, W. P. (1879). Miss Wood in Derbyshire: A Series of Experimental Séances Demonstrating the Fact That Spirits Can Appear in the Physical Form. London: J. Burns.

Alexandre-Bisson, J. (1921). Les Phénomènes dits de Materialisation: Étude Experimentale (2nd ed.). Paris: Félix Alcan.

Crookes, W. (1874). Researches in the Phenomena of Spiritualism. London: J. Burns.

Oxley, W. (1876). A spirit materialising under the eyes of the observers in Manchester. Spiritualist Newspaper, (May 12):222–223.

Schrenck-Notzing, [A.] Baron (1920). Phenomena of Materialisation: A Contribution to the Investigation of Mediumistic Teleplastics (revised edition). London: Paul Trench, Trübner.

Another section is about theoretical ideas: “Vital Forces, Ideoplasty, and Materializations.” “The idea that materialization depends on the vital force of the medium, what one writer called the “stuff for form-building”. . . , was frequently discussed during the Nineteenth Century by students of the subject . . . , and in messages presumed by some to come from spirits of the dead . . .” These speculations include those that advocated for discarnate agency and for the idea that the materializations were produced and guided by the minds of mediums, and sometimes, sitters.

Eglinton materialization

Artistic representation of connection between materialized form and medium William Eglinton

This includes the ideas of French researcher Gustave Geley. “Based on the idea of a basic universal substance as the substrate of living things, Geley . . . considered ectoplasm and organic formations ideoplastic creations. Seeing materialization as a biological process, Geley compared the incomplete and grotesque character of ectoplasmic formations to those found in animal and human forms. ‘Like normal physiology, the so-called supernormal has its complete and aborted forms, its monstrosities, and its dermoid cysts. The parallelism is complete’ . . . He also compared ectoplasmic development to the histolysis of insects: ‘The same phenomenon takes place, as has already been said, in the closed chrysalis of the insect as in the dark cabinet at the séance.’ ”


Gustave Geley

Some references used in this section about theory were:

Aksakof, A. (1898). A Case of Partial Dematerialization of the Body of a Medium: Investigation and Discussion. Boston: Banner of Light.

Carrington, H. (1921). Vital energy and psychical phenomena. Psychic Research Quarterly, 1, 271–277.

Geley, G. (1920). From the Unconscious to the Conscious. Glasgow: William Collins. [First published in French in 1919]

Harrison, W. H. (1876). Speculations tending to explain certain spiritual manifestations. Spiritualist Newspaper, (May 5):205–206.

Morselli, E. A. (1908). Psicologia e “Spiritismo:” Impressioni e Note Critiche sui Fenomeni Medianici di Eusapia Paladino (2 vols.). Turin: Fratelli Bocca.

Richmond, C. L. V. (1877). Is materialization true? If so, it’s philosophy. Banner of Light, (June 9):2.

Then I present some biographical details about Dingwall, and the text of his article. The reprint of the article is annotated to provide further information and bibliographical sources, many of which were not mentioned by the author. Dingwall pays particular attention to the ectoplasm reported to take place around mediums Eva C. and Kathleen Goligher.

Eric John Dingwall

Eric J. Dingwall

Dingwall Plasma Theory

Eva C 5

Ectoplasm with Eva C.

Kathleen Goligher 5

Ectoplasm with Kathleen Goligher

 After Dingwall’s paper, I summarized developments after 1921 in sections about observations and studies, critiques, and theoretical ideas. Among other references, I cited: Bozzano, E. (1926). À Propos de l’Introduction à la Métapsychique Humaine. Paris: Jean Meyer; Dingwall, E. J. (1926). A report on a series of sittings with the medium Margery. Proceedings of the Society for Psychical Research, 36, 79-158; Fodor, N. (1934). Simplifying “miracles”: Theory of materialization process. Light, 54, 10; Gulat-Wellenburg, W. von, Klinckowstroem, C. von, & Rosenbusch, H. (1925). Der physikalische Mediumismus. Berlin: Ullstein; Hamilton, T. G. (1931). Some new facts regarding teleplasms. Psychic Science, 9(4), 262-270; and Lapicque, L., Dumas, G., Piéron, H., & Laugier, H. (1922). Rapport sur des experiences de contrôle relatives aux phénomenes dits ectoplasmiques. L’Année Psychologique, 23, 604-611; Schrenck-Notzing, [A.] F. von (1921). Das Materialisationsproblem nach den Untersuchungen W. Crawfords. Psychische Studien, 48, 337-366.

Bozzano A Propos

Schrenck Notzing Crawford 1921

I also cited Charles Richet’s theoretical comments published in his celebrated Traité de Métapsychique in 1922:

“When I put a hand in front of a mirror, the image of my hand is reflected: reflection of light. In front of a thermometer, reflection of heat. In front of a galvanometer, reflection of electricity. It is true that in front of one balance there is nothing there. But is it unreasonable to suppose that this projection of light, heat, and electricity could be accompanied by a projection of mechanical force? . . .”

“Materialization is a mechanical projection. We already have projection of light, heat, and electricity. It is not going very far to see as possible, besides these projections of heat, light, and electricity, a projection of mechanical force. The memorable demonstrations of Einstein establish at which point mechanical energy approaches luminous energy.”

Charles Richet 10

Charles Richet

Richet Traite

I concluded that Dingwall’s article is a good reminder of parts of the old materialization literature. “Although my interest is mainly historical, I realize that many study the topic to determine if the phenomena are real or not. As pointed out by various modern authors . . . , there are good observations that cannot be ignored. But the topic is still generally dismissed. In general this material tends to be seen today with suspicion due, at least in part, to recorded instances of fraud . . .”

I end saying: “. . . hopefully future work on the topic will be inspired by essays such as Dingwall’s, so as to benefit from awareness of previous findings, as well as of methodological issues, and the problem of fraud. But more important, to be significant, this work needs to go beyond the observational stage so typical of much of this literature. By this I mean that, if it is possible to make a good case for the reality of the phenomenon, and that it appears consistently enough to be studied carefully, research needs to be conducted to learn something about its nature.”


Carlos S. Alvarado, PhD, Research Fellow, Parapsychology Foundation 

Here is an English-language bibliography about mental mediumship published between 2000 and 2019. I am not including here publications about sociological and anthropological aspects of mediumship, not of the effects of mediumship on bereavement.


Bastos Jr., M.A.V., et al. (2015). Mediumship: Review of quantitative studies published in the 21st century. Archives of Clinical Psychiatry, 42, 129-138.

Beischel, J. (2018). Mental mediumship research. In R. McLuhan (Ed.), Psi Encyclopedia. London: Society for Psychical Research.

Beischel, J., & Zingrone, N.L. (2015). Mental mediumship. In E. Cardeña, J. Palmer, & D. Marcusson- Clavertz (Eds.), Parapsychology: A Handbook for the 21st Century (pp. 301-313). Jefferson, NC: McFarland.

Braude, S.E. (2003). Immortal Remains: The Evidence for Life After Death. Lanham, MD: Rowman & Littlefield. Chapters 2 and 3.

Rock, A.J. (Ed.). (2013). The Survival Hypothesis: Essays on Mediumship. Jefferson, CA: McFarland.


Alvarado, C.S. (2014). Mediumship, psychical research, dissociation, and the powers of the subconscious mind. Journal of Parapsychology, 78, 98-114.

Alvarado, C.S. (2016). Classic Text No. 107: Joseph Maxwell on mediumistic personifications. History of Psychiatry, 27, 350-366. Abstract

Alvarado, C. S. (2016). Classic Text No. 105: “Report of the Committee on Mediumistic Phenomena,” by William James (1886). History of Psychiatry, 27, 85–100. Abstract

Alvarado, C.S., & Biondi, M. (2017). Classic Text No. 110: Cesare Lombroso on Mediumship and Pathology. History of Psychiatry, 28, 225–241. Abstract

Alvarado, C.S., Nahm, M., & Sommer, A. (2012). Notes on early interpretations of mediumship. Journal of Scientific Exploration, 26, 855-865.

Anderson, R.I. (2006). Psychics, Sensitives and Somnambules: A Biographical Dictionary with Bibliographies. Jefferson, NC: McFarland.

Blum, D. (2006). Ghost Hunters: William James and the Search for Scientific Proof of Life After Death. New York: Penguin Press.

Crabtree, A. (2015). Mesmerism and the psychological dimension of mediumship. In C. Gutierrez (Ed.), Handbook of Spiritualism and Channeling (pp. 7-31). Leiden: Brill.

Fryer, C. (2012). Geraldine Cummins: An Appreciation. White Crow Books.

Hamilton, T. (2017). Arthur Balfour’s Ghosts: An Edwardian Elite and the Riddle of the Cross-Correspondence Automatic Writings. Exeter: Imprint Academic.

Hazelgrove, J. (2000) Spiritualism and British Society Between the Wars. Manchester, UK: Manchester University Press.

Le Maléfan, P., Evrard, R., & Alvarado, C.S. (2013). Spiritist delusions and spiritism in the nosography of French psychiatry (1850-1950). History of Psychiatry, 24, 477-491.

Leonard, T.J. (2005). Talking to the Other Side: A History of Modern Spiritualism and Mediumship: A Study of the Religion, Science, Philosophy and Mediums that Encompass this American-Made Religion. New York: iUniverse.

Maraldi, E. de O., & Alvarado, C.S. (2018). Classic Text No. 113: Final chapter, From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia, by Théodore  Flournoy (1900). History of Psychiatry, 29, 110-125. Abstract

Massicotte, C. (2017). Trance Speakers: Femininity and Authorship in Spiritual Séances, 1850–1930. Montreal: McGill-Queen’s University Press.

Moreira-Almeida A., Almeida, A. A. S., & Lotufo Neto, F. (2005). History of spiritist madness in Brazil. History of Psychiatry, 16, 5-25.

Robertson, B.A. (2017). Science of the Seance: Transnational Networks and Gendered Bodies in the Study of Psychic Phenomena, 1918-40. Vancouver: University of British Columbia Press.

Shamdasani, S. (2015). ‘S.W.’ and C.G. Jung: Mediumship, psychiatry and serial exemplarity. History of Psychiatry, 26, 288-302. Abstract

Tymn, M. (2013). Resurrecting Leonora Piper: How Science Discovered the Afterlife. Guildford, UK: White Crow Books.


Veridical tests

Beischel, J., Boccuzzi, M., Biuso, M., & Rock, A. J. (2015). Anomalous information reception by research mediums under blinded conditions II: Replication and extension. EXPLORE: The Journal of Science & Healing, 11, 136-142.

Beischel, J., & Schwartz, G.E. (2007). Anomalous information reception by research mediums demonstrated using a novel triple-blind protocol. EXPLORE: The Journal of Science & Healing, 3, 23-27.

Jensen, C.G., & Cardeña, E. (2009). A controlled long-distance test of a professional medium. European Journal of Parapsychology, 24, 53-67.

Kelly, E.W., Arcangel, D. (2011). An investigation of mediums who claim to give information about deceased persons. Journal of Nervous and Mental Disease, 199, 11-17.

O’Keeffe, C., & Wiseman R. (2005). Testing alleged mediumship: Methods and results. British Journal of Psychology, 96(Pt 2), 165-179. Abstract

Rocha,. AC., Paraná, D., Freire, E.S., Lotufo Neto, F., Moreira-Almeida A. (2014). Investigating the fit and accuracy of alleged mediumistic writing: A case study of Chico Xavier’s letters. Explore: The Journal of Science & Healing, 10, 300-308. Abstract

Rock, A. J., & Beischel, J. (2008). Quantitative analysis of mediums’ conscious experiences during a discarnate reading versus a control task: A pilot study. Australian Journal of Parapsychology, 8, 157-179.

Rock, A. J., Beischel, J., Boccuzzi, M., & Biuso, M. (2014). Discarnate readings by claimant mediums: Assessing phenomenology and accuracy under beyond double-blind conditions. Journal of Parapsychology, 78(2), 183-194.

Roy, A. E., & Robertson, T. J. (2001). A double- blind procedure for assessing the relevance of a medium’s statements to a recipient. Journal of the Society for Psychical Research, 65, 161–174. Abstract

Roy, A.E., Robertson, T.J. (2004). Results of the application of the Robertson-Roy protocol to a series of experiments with mediums and participants. Journal of the Society for Psychical Research, 68, 161-174.

Schwartz, G.E., Geoffrion. S., Jain, S., Lewis, S., Russek, L.G. (2003).  Evidence of anomalous information retrieval between two mediums: Replication in a double-blind design. Journal of the Society for Psychical Research, 67, 115-130.

Schwartz, G.E., & Russek, L. (2001). Evidence of anomalous information retrieval between two mediums: Telepathy, network memory resonance, and continuance of consciousness. Journal of the Society for Psychical Research, 65, 257-275.

Schwartz, G. E. R., Russek, L. G. S., Nelson, L. A., & Barentsen, C. (2001). Accuracy and replicability of anomalous after-death communication across highly skilled mediums. Journal of the Society for Psychical Research, 65, 1–25.

Schwartz, G.E., with Simon, W.L. (2002). The Afterlife Experiments: Breakthrough Scientific Evidence of Life After Death. New York: Pocket Books.

Schwartz, G.E., & Simon, W.L. (2005). The Truth About Medium: Extraordinary Experiments with the Real Allison DuBois of NBC’s Medium and other Remarkable Psychics. Charlottesville, VA: Hampton Roads.

Storm, L.C., & Rock, A.J. (2015). Testing telepathy in the medium/proxy-sitter dyad: A protocol focusing on the source-of-psi problem Journal of Scientific Exploration, 29, 565-584.

Physiological tests

Bastos, M. A. V., Jr.; Bastos, P. R. H. de O. Osório, I. H. S., Muass, K. A. R. C., Iandoly, D., Jr.; Lucchietti, G. (2016). Frontal electroencephalographic (EEG) activity and mediumship: A comparative study between spiritist mediums and controls. Archives of Clinical Psychiatry, 43, 20–26.

Beischel, J., Tassone, S., & Boccuzzi, M. (2019). Hematological and psychophysiological correlates of anomalous information reception in mediums: A preliminary exploration. EXPLORE: The Journal of Science & Healing, 15, 126–133. Abstract

Delorme, A., Beischel. J., Michel, L., Boccuzzi, M., Radin, D., & Mills, P. J. (2013). Electrocortical activity associated with subjective communication with the deceased. Frontiers in Psychology, 4: 834. doi: 10.3389/fpsyg.2013.00834

Hageman, J. H., Peres, J. F. P., Moreira-Almeida, A., Caixeta, L., Wickramasekera, I. II, & Krippner, S. (2010). The neurobiology of trance and mediumship in Brazil. In S. Krippner & H. L. Friedman (Eds.), Mysterious minds: The neurobiology of psychics, mediums, and other extraordinary people (pp. 85-111). Santa Barbara, CA: ABC-CLIO. Abstract

Peres, J.F, Moreira-Almeida, A., Caixeta, L., Leao, F., & Newberg, A. (2012). Neuro-imaging during trance state: A contribution to the study of dissociation. PLoS One;7(11)

Psychological tests

Moreira-Almeida, A., Neto, F.L., & Cardeña, E. (2008). Comparison of Brazilian spiritist mediumship and dissociative identity disorder. Journal of Nervous and Mental, 196, 420-424.

Moreira-Almeida A., Lotufo Neto, F., & Greyson, B. (2007). Dissociative and psychotic experiences in Brazilian spiritist mediums. Psychotherapy and Psychosomatics, 76, 57-58.

Negro, P. J., Palladino-Negro, P., & Rodrigues Louza, M. (2002). Do religious mediumship dissociative experiences conform to the sociocognitive theory of dissociation? Journal of Trauma and Dissociation, 3, 51–73. Abstract

Roxburgh, E.C., & Roe, C.A. (2011). A survey of dissociation, boundary-thinness and psychological wellbeing in spiritualist mental mediumship. Journal of Parapsychology, 75, 279-299. Abstract

Wahbeh, H., & Radin, D. (2018). People reporting experiences of mediumship have higher dissociation symptom scores than non-mediums, but below thresholds for pathological dissociation. F1000 Research 6: 1416.

Other (see also Leonard, 2005 from History section)

Beischel, J., Mosher, C., & Boccuzzi, M. (2017). Quantitative and qualitative analyses of mediumistic and psychic experiences. Threshold: Journal of Interdisciplinary Consciousness Studies, 1(2): 51-91.

Emmons, C. F., & Emmons, P. (2003). Guided by Spirit: A Journey into the Mind of the Medium. New York: Writers Club Press.

Leonard, T.J. (2015). A qualitative analysis of mediumship development among ordained Spiritualist ministers: A research study. Bulletin of Fukuoka University of Education, 64, 33-42.

Maraldi, E. de O., & Krippner, S. (2013). A biopsychosocial approach to creative dissociation: Remarks on a case of mediumistic painting. NeuroQuantology, 11, 544-572.

Rock, A. J., Beischel, J., & Cott, C. C. (2009). Psi vs. survival: A qualitative investigation of mediums’ phenomenology comparing psychic readings and ostensible communication with the deceased. Transpersonal Psychology Review, 13, 76-89.

Rock, A. J., Beischel, J., & Schwartz, G. E. (2008). Thematic analysis of research mediums’ experiences of discarnate communication. Journal of Scientific Exploration, 22, 179-192.

Roxburgh, E. C., & Roe, C. A. (2013). Exploring the meaning of mental mediumship from the mediums’ perspective. In C. M. Moreman (Ed.), The Spiritualist Movement: Speaking with the Dead in America and Around the World (pp. 53-67). California: Praeger Publishers.

Roxburgh, E. C., & Roe, C. A. (2013). “Say from whence you owe this strange intelligence”: Investigating explanatory systems of spiritualist mental mediumship using interpretative phenomenological analysis. International Journal of Transpersonal Studies, 32(1), 27-42.

Roxburgh, E. C., & Roe, C. A. (2014).  Reframing voices and visions using a spiritual model:  An interpretative phenomenological analysis of anomalous experiences in mediumship. Mental Health, Religion, & Culture, 17, 6, 641-653. Abstract

Wabeh, H., Carpenter, L., & Radin, D. (2018). A mixed methods phenomenological and exploratory study of channeling. Journal of the Society for Psychical Research, 82, 129-147. Abstract

Other Topics (Mainly Conceptual)

Alvarado, C.S. (2012). Mediumship and dreams. Paranormal Review, No. 64, 8-12.

Alvarado, C.S. (2010). Investigating mental mediumship: Research suggestions from the historical literature. Journal of Scientific Exploration, 24, 197-224.

Beischel, J. (2007). Contemporary methods used in laboratory-based mediumship research. Journal of Parapsychology, 71, 37-68.

Beischel, J., & Rock, A. J. (2009). Addressing the survival vs. psi debate through process-focused mediumship research. Journal of Parapsychology, 73, 71-90.

Braude, S. E. (2000). Dissociation and latent abilities: The strange case of Patience Worth. Journal of Trauma and Dissociation, 1, 13–48.

Braude, S.B. (2017). Mediumship and multiple personality. In R. McLuhan (Ed.), Psi Encyclopedia. London: Society for Psychical Research.

Cunningham, P.F. (2012). The content–source problem in modern mediumship research. Journal of Parapsychology, 76, 295-319.

Hunter, J. (2017). Mediumship and spirit possession in a cross-cultural context. In R. McLuhan (Ed.), Psi Encyclopedia. London: Society for Psychical Research.

Maraldi, E. de O. (2014). Medium or author? A preliminary model relating dissociation, paranormal belief systems and self-esteem. Journal of the Society for Psychical Research, 78, 1-24.

Moreira-Almeida, A. (2012). Research on mediumship and the mind-brain relationship In A. Moreira-Almeida, & F.S. Santos (Eds.), Exploring Frontiers of the Mind-Brain Relationship (pp. 191-213). New York: Springer.

Sudduth, M. (2009). Super-psi and the survivalist interpretation of mediumship. Journal of Scientific Exploration, 23, 167–193.