Everton Maraldi

Everton de Oliveira Maraldi is a Brazilian psychologist with research interests in the psychology of non-ordinary experiences, spirituality, religion and health.


Everton Maraldi is a professor of Religious Studies at the Pontifical Catholic University of São Paulo, Brazil, and a research associate at the D'Or Institute for Research and Education (Rio de Janeiro). He was a postdoctoral research fellow at Coventry University (Brain, Belief, and Behaviour Lab) and University of Oxford (SCIO—Scholarship and Christianity in Oxford), UK. In 2023, he was elected president of the Parapsychological Association (USA). He has a bachelor’s degree in psychology from Guarulhos University, as well as master's and doctorate degrees in social psychology from the Institute of Psychology of the University of São Paulo.

Maraldi’s research interests focus on the psychology of religious experiences, spirituality, religion and health. More specifically, his investigations revolve around topics such as dissociation and dissociative disorders; trance and dissociation in religious contexts; anomalous experiences; and historical approaches to psychological and psychiatric studies on religion and the paranormal. This article reviews some of his main publications.

Cross-cultural Research on Anomalous Expressions

In a 2019 paper, Maraldi and Krippner applaud significant developments in understanding both the cognitive and personality aspects of anomalous experiences but decry the lack of cross-cultural comparison studies.  With this is mind they critically review the limited scientific literature that describes anomalous experiences within a cross-cultural context. They go on to discuss theoretical issues arising from cultural and cross-cultural investigations of anomalous experiences, with a focus on methodological challenges and shortcomings of this research pathway.1

Cross-cultural Validity of Dissociative Disorders

Maraldi and collaborators review the existing research in Brazil on the topic of dissociation, discussing its implications for the cross-cultural validity of definitions and measurements used to identify and classify dissociative disorders. The authors also discuss the ways in which dissociative experiences are assimilated by Brazilian culture and religious expressions, and how Brazilian studies can elucidate the sociocultural dynamics of dissociation and related phenomena, such as mediumship. They observe that the prevalence and validity of dissociative disorders among the Brazilian population are still largely unknown. Few cases of dissociative identity disorders are found in the scientific literature. Nevertheless, Brazilian studies tend to confirm the link between dissociation, trauma, and posttraumatic stress reactions, as well as some of the main diagnostic features of dissociative disorders such as depersonalization and dissociative fugue. Maraldi concludes that the dissociation experienced in religious contexts and rituals (such as Spiritism and Umbanda in Brazil) may have a distinct etiological pathway in comparison to trauma-related dissociation, even though some cases of pathological possession could be explained in terms of traumatic aetiology.2

Dissociative States in Mediums

Maraldi and Krippner carried out a multi-method investigation of the mediumistic painting activity performed by Jacques Andrade, a Brazilian medium. The authors evaluated the quality of Andrade’s pictorial production, his state of consciousness during mediumship practice, and his psychological and social profile. Data about the medium were collected on different occasions between 1998 and 2013, and included psychophysiological measures (hand temperature, heart rate, bilateral skin conductance, muscle tension, and electrical brain activity), psychological measures (Dissociative Experiences Scale, Tellegen Absorption Scale, Revised Transliminality Scale, and Childhood Trauma Questionnaire), artistic material, observational data (photographs of paintings, observations of the medium in action), and some basic socio-demographic and biographical information. To integrate these findings, the authors propose a biopsychosocial approach to the study of what they called creative dissociation (that is, dissociation specifically related to creative and artistic elaborations). They also discuss how the study of creative dissociation could illuminate the aetiology of normal and pathological dissociative processes.3

In a qualitative study with 11 mediums, Maraldi explored further the relations of mediumship and creative dissociation. He found that mediumistic practices of an artistic character might serve as creative coping strategies in opposition to suffering and low self-esteem. They might also help mediums to psychologically elaborate diffuse or impulsive emotions experienced in early childhood.4

Psychiatric and Anthropological Investigations

To further explore the dissociative nature of mediumistic experiences, Maraldi, Ribeiro and Krippner reviewed the evidence pertaining to both psychiatric and anthropological investigations of mediumship and dissociation carried out in Brazil and abroad. The wider goal was to illustrate how group and cultural differences impact the nature of mediumistic experiences. They explored the differences that exist between mediums from the same religious affiliation, and between mediums from different affiliations, and lastly between mediums from different cultures – in this case the UK and Brazil. They argued that mediumistic experiences are too variable to be treated as a monolithic phenomenon. They went on to challenge the standard biomedical model, pointing out the complex and diverse nature of these experiences.5

Phenomenological Characteristics

Maraldi coordinated a qualitative study which explored the phenomenological characteristics of anomalous experiences (AEs) reported during rituals in Umbanda (a mediumistic Brazilian religion). The aim was to compare AEs reported during rituals involving the use of Ayahuasca (an entheogen frequently used in Umbanda contexts) and rituals without this substance. They compared individuals with different levels of involvement with the mediumistic practices. The results suggested a significant similarity between the experiences reported with and without the use of Ayahuasca in mediumistic rituals. In both groups, the experiencers were able to identify similarities in their experiences regarding a reduction of voluntary motor control, changes in memory and perception, communicability and accessibility of experiences, anomalous information reception and increases in interpersonal sensitivity.6

Dissociation Across Religious Groups

Despite the ever-increasing research demonstrating correlations between dissociative, religious and paranormal experiences, little work on this has been done in Brazil.  Maraldi and Zangari describe the results of study involving 1,450 survey respondents. This included survey data from mediumistic religions, esoteric groups, and spiritual individuals with no defined membership. Individuals in these groups did not vary on cognitive dissociation (including variables such as absorption, depersonalization, and dissociative amnesia), but scored above atheists, agnostics, Catholics and Pentecostals. Interestingly, mediumistic religions showed significantly higher scores in somatoform dissociation (bodily manifestations) compared to the other groups. Members of esoteric groups (such as Theosophists and Rosicrucians) evidenced the highest score on the Dissociative Experiences Scale.7


Maraldi took part in a large group investigation of the validity of a standard measure of transliminality (the ease with which information enters consciousness from the internal and external environment) across different cultures. He and co-workers administered a Portuguese version of the Revised Transliminality Scale (RTS) to an online sample of 341 university students, starting with those at the Institute of Psychology of the University of São Paulo. They found that the Brazilian measures correlated nearly perfectly with the estimates derived from earlier research. A few differences related to age and sex were obtained, but these did not appreciably affect the estimates of overall transliminality levels. Maraldi and co-authors concluded that the research supported the robustness of current transliminality measurements, and served as a guide to advance further cross-cultural research into understanding transliminality.8

Cultural Differences in Paranormal Beliefs

Maraldi and Farias note a growing interest in the study of the underlying cognitive processes powering New Age and paranormal beliefs (NAPBs). Unfortunately, there is a paucity of research in non-Western populations. The sample in this study consisted of 615 Brazilians who were tested with a new measure developed by Maraldi, the NAPBs Implicit Association Test (IAT), which measures implicit associations towards paranormal beliefs. Maraldi found that the NAPBs-IAT correlated positively with a self-report scale of NAPBs and of spiritual practices and this relationship was even stronger than with Western populations (p = 0.001). Most importantly, the new test could discriminate between believers and skeptics.9  In contrast to some investigations with Western populations, the implicit measure of NAPBs showed a significant association with the Revised Paranormal Belief Scale (used as an explicit, self-report measure of NAPBs), which suggests that the explicit endorsement of NAPBs is not inconsistent with implicit associations, and that implicit-explicit correlation patterns for measures of religious and spiritual beliefs may differ across cultures.

Response Bias in Spirituality and Mental Health Research

Although a significant body of research describes the psychological benefits of religious and spiritual practices, little of it tries to understand the mechanism at work in improving mental health. Maraldi cautions that although some research indicates a causal relationship between spiritual practices and good mental health, a more prosaic explanation could be methodological shortcomings such as response bias: those who engage in such practices might be more inclined to overrate their mental health in order to satisfy stereotypes or the perceived expectations of the researchers. His review of the literature indicates that the positive relationship between religiosity and social desirability appears relatively weak and can be interpreted in ways that do not involve distorted or biased responding. Still, few investigations addressed the problem of response bias, which include other factors beyond social desirability, such as experimenter and cultural biases. Maraldi argues that response biases should be more fully addressed in future research before drawing firm conclusions regarding the impact of spiritual practices on mental health or any casual influences.10

Spirituality and Wellbeing

Maraldi argues that spirituality has a larger significance than the focus on mental health and wellbeing usually observed in the psychiatric and psychological literatures. He proposes to define spirituality mainly in terms of individual religiousness and a secularized search for transcendence, independent of wellbeing and mental health. Maraldi presents data from a survey he carried out with Brazilian respondents indicating that people who define themselves as ‘spiritual, but not religious’ are similar to religious participants in their perspectives on spirituality, despite presenting low church/ritual attendance when compared to religious believers. Self-proclaimed atheists considered themselves significantly more as non-spiritual and defined life as meaningless; however, they usually reported fewer psychopathological symptoms. These findings suggest that spirituality is not necessarily a matter of wellbeing, and its relationship with mental health may be more complex than usually portrayed. Spirituality may sometimes involve therapeutic benefits, but challenges and difficulties also constitute an essential part of the spiritual growth process. Maraldi emphasizes the need for an ethical framework for any psychological therapy and connects the spiritual growth process to the Jungian concept of individuation.11

Théodore Flournoy

Another of Maraldi’s research interests concerns the history of psychological and psychiatric studies on religion and the paranormal. Maraldi, Alvarado and others review the contributions of Swiss psychologist Théodore Flournoy (1854–1920) to psychical research. Chief among these is the classic investigations of the trance medium Hélène Smith. Detailed discussions can be found in a paper by Maraldi and Alvarado published in the journal History of Psychiatry12 and also in the Psi Encyclopedia.13 Flournoy also investigated physical mediums, telepathy and precognition.14  

Social Support Behaviours Among Mediums

Maraldi and colleagues carried out research with mediums in different mediumistic religions in Brazil.15 They found that participants whose mediumistic experiences began in adulthood, and within a religious context, reported experiencing less negative affect such as fear compared to those whose experiences began in childhood and adolescence, and outside of a religious context. Overall, mediumistic experiences were more often associated with positive feelings of peace and tranquillity rather than negative feelings. Over time, the experiences of these individuals began to occur more within the religious context than outside of it (for instance, in public places or at home).16

Parapsychology and Religion

Maraldi’s 2021 book Parapsychology and Religion explores how an open-minded dialogue between the two fields might help researchers move beyond ideological disputes. He reviews their complex relations over time, surveying the variety of perspectives embraced by parapsychologists with regard to religion and their implications for a deeper understanding of religious experience and spirituality.17

Michael Duggan


Alvarado, C., Maraldi, E., Zangari, W., Machado, F. (2014). Théodore Flournoy's contributions to Psychical Research. Journal of the Society for Psychical Research 78/3, 149-68.

Charles, S., van Mulukom, V., Farias, M., Brown, J., Delmonte, R., Maraldi, E., Turner, L., Watts, F., Watts, J., Dunbar, R. (2020). Religious Rituals Increase Social Bonding and Pain Threshold. 10.31234/osf.io/my4hs

Lange, R., Maraldi, E., Zangari, W., Corredato, V., Machado, F., Alvarado, C. (2018). A Cross-Cultural Validation of the Revised Transliminality Scale in Brazil. Psychology of Consciousness: Theory, Research, and Practice 5, 414-24.

Machado, F., Mendonça, T., Huang, M.,  Zangari, W., Maraldi, E. (2019). A Ciência dos Religiosos: Um Estudo Quantitativo Exploratório. Interação em Psicologia 23/2, 243-55.

Maraldi, E.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.

Maraldi, E.O. (2018). Response Bias in Research on Religion, Spirituality and Mental Health: A Critical Review of the Literature and Methodological Recommendations. Journal of Religion and Health 59, 772-83. 10.1007/s10943-018-0639-6

Maraldi, E.O. (2020). Spirituality and Wellbeing: Is There a Necessary Link? Toward a Critical Approach to the Study of Spirituality. In Spirituality and Wellbeing: Interdisciplinary Approaches to the Study of Religious Experience and Health, ed. by B. Schmidt & J. Leonardi, 19-43. Sheffield: Equinox Publishing Home.

Maraldi, E.O. (2021). Parapsychology and Religion. Leiden: Brill Publishing.

Maraldi, E.O., Krippner, S. (2013). Biopsychosocial Approach to Creative Dissociation: Remarks on a Case of Mediumistic Painting. Neuroquantology 11/4, 544-72.

Maraldi, E.O., & Zangari, W. (2015). "In trance": A quali-quantitative study on the role of dissociative and somatoform experiences in religious beliefs and rituals. Boletim Academia Paulista de Psicologia 35, 382-408.

Maraldi, E.O., Krippner, S., Barros, M.C.M., Cunha, A. (2017). Dissociation from a cross-cultural perspective: implications of studies in Brazil. Journal of Nervous and Mental Disease 205/7, 558-67.  

Maraldi, E.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 29/1, 110-25.

Maraldi, E., & Farias, M. (2019). Assessing Implicit Spirituality in a non-WEIRD Population: Development and Validation of an Implicit Measure of New Age and Paranormal Beliefs. International Journal for the Psychology of Religion. 10.1080/10508619.2019.1661198

Maraldi, E., Ribeiro, R., & Krippner, S. (2019). Cultural and group differences in mediumship and dissociation: exploring the varieties of mediumistic experiences. International Journal of Latin American Religions. 10.1007/s41603-019-00076-0

Maraldi, E., Krippner, S. (2019). Cross-Cultural Research on Anomalous Experiences: Theoretical Issues and Methodological Challenges. Psychology of Consciousness: Theory, Research, and Practice. 10.1037/cns0000188

Maraldi, E.O. et al. (2020). Anomalous and dissociative experiences in a religious context: an autoethnographic approach. Phenomenological Studies – Revista da Abordagem Gestáltica 26/2, 147-61.

Maraldi, E.O., Farias, M. (2020). Assessing Implicit Spirituality in a non-WEIRD Population: Development and Validation of an Implicit Measure of New Age and Paranormal Beliefs. The International Journal for the Psychology of Religion 30/2, 101-11.

Maraldi, E.O., Costa, A., & Cunha, A. (2023). Social Support, Help-Seeking Behaviors, and Positive/Negative Affect Among Individuals Reporting Mediumship Experiences. International Journal of Latin American Religions, April, 1-16.

Menegatti, M., Maraldi, E.,  Peres, M., Leao, F., & Vallada, H. (2018). How psychiatrists think about religious and spiritual beliefs in clinical practice: findings from a university hospital in Sao Paulo, Brazil. Revista Brasileira de Psiquiatria 41. 10.1590/1516-4446-2017-2447.

Peres, M.,  Swerts, D.,  Oliveira, A.,  Leão, F., Lucchetti, A., Vallada, H.,  Maraldi, E., Toniol, R., Lucchetti, G. (2020). Mental Health and Quality of Life Among Adults With Single, Multiple, and No Religious Affiliations. Journal of Nervous and Mental Disease 208/1. 10.1097