“Psychedelics and Personal Transformation: Between the Threshold and the Community”

By Jose Carlos Bouso · Edited by Psiconáutica

The use of psychoactive substances has historically served as a vehicle for transforming identities through communal rituals. We examine the scientific debate over whether these experiences induce permanent personality changes, analyzing what the evidence reveals.

The Threshold of Identity

From the earliest civilizations to the modern era, human beings have sought mechanisms to mark the defining milestones of existence: birth, puberty, marriage, and death. Across all of these vital transitions, a powerful anthropological constant emerges: the rite of passage. These ceremonies are far from mere social formalities; they are profound processes designed to restructure an individual’s identity within their community. Frequently, these rites incorporate what we now classify as psychoactive substances—plants, fungi, or animal secretions—as essential ecstatic tools. Their function is not recreational, but instrumental: they place initiates in a space where the known self dissolves to make way for a new configuration of being.

The Theory of Rites of Passage

The theoretical framework that allows us to understand these phenomena was established by French ethnographer Arnold van Gennep. In his seminal 1909 work, he defined these practices as complex sequences divided into three phases:

1. Separation: The individual is detached from their previous status and the social group that has defined them up to that point.
2. Margin or Liminality: This is the critical phase. The subject stands “between two worlds,” in an ambiguous, undefined state outside customary structural categories. Here lies the essence of transformation.
3. Aggregation: The individual is reintegrated into the community with a new status, rights, and obligations.

Decades later, anthropologist Victor Turner expanded on this second phase, granting it a special significance. For Turner, this liminal period was not simply a void, but a space of “anti-structure” where the initiate’s status was elevated toward a higher normative communitas.

Pain and Symbolic Death

It is crucial to understand that this transition is rarely pleasant. Phenomenologically, the liminal phase involves death and rebirth. The individual must “die” to their former identity in order to be reborn as someone new. In many cultural traditions, this process is accompanied by intense physical and psychological suffering. A film that masterfully illustrates this dynamic is La selva esperada, which dramatizes how the initiate undergoes a deep trance under the guidance of shamans or ritual specialists. In these contexts, the entire community actively participates: accompanying the subject through the trance and welcoming them with celebration once it concludes. Psychoactive substances, in these traditional cultures, act as catalysts that plunge the individual into this radical liminality. They create an ineffable space where anything can happen, symbolically shielding the soul from spiritual exposure through the guidance of the shaman and the construction of sacred space.

A Reductionist View: Looking Only at the Vehicle

Contemporary science often tends to reduce these complex cultural phenomena to their material components. There is a marked tendency to focus exclusively on the chemical substance as a “technical vehicle,” ignoring the relational and symbolic fabric that surrounds it. This is akin to trying to understand the meaning of the Christian Eucharist solely through the physical act of consuming the host, without considering years of catechesis, the faith community, and prior spiritual intention. In the same way, studying whether a drug changes personality while ignoring social context remains fundamentally incomplete. Nevertheless, modern clinical psychology has begun investigating these variables separately, asking whether the intrapsychic experience induced by the substance is sufficient on its own to produce lasting changes in personality structure.

Scientific Evidence and Types of Studies

To approach this question with rigor, researchers have reviewed literature published from 1985 through the end of 2016. The analyzed studies generally fall into three main categories:

1. General Retrospective Studies: Personality assessments administered to regular users to examine whether drug use has influenced their character traits.
2. Studies with Specific Populations (Ayahuasca Churches): Assessments of members of communities who consume ayahuasca regularly without other substance use. These studies have shown differences in personality measures compared to non-users, although direct causality remains debated.
3. Controlled Clinical Trials: Administration of psychoactives (such as psilocybin) in hospital settings using double-blind, placebo-controlled designs. These trials evaluate the direct impact of the compound in isolation from external social variables.

Preliminary Findings

What emerges from this review is nuanced:

• Uncertain Causality: In retrospective studies, it is difficult to determine whether substance use altered personality or whether pre-existing traits led to use in the first place.
• Structural Differences: Some studies have found correlations between sustained use and differences in cortical thickness, pointing to possible physiological underpinnings for certain psychological changes.
• Openness to Experience: Clinical trials with psilocybin demonstrate that a single administration can significantly increase “openness to experience.” This trait encompasses active imagination, aesthetic sensitivity, and intellectual curiosity.

Harm Reduction and Critical Analysis

It is essential to distinguish between ritualized use within safe community settings and isolated or unsupervised recreational consumption.

• Risk of Challenging Experiences: Without a thoroughly prepared set and setting and the presence of qualified guides, liminal experiences can be overwhelming or traumatic, leading to adverse outcomes.
• Lack of Social Context: Personal transformation in isolation lacks the communal component that anchors and gives meaning to change. Without a community to validate the new status, integration can easily falter.
• Evidence vs. Hype: While results are promising for clinical applications (such as treatment-resistant depression or trauma), they should not be seen as a guarantee of universal self-improvement or as a replacement for conventional therapy.

Editorial Conclusion: Toward an Integrated Psychonautics

The transformative potential of psychedelics lies in their capacity to challenge our rigid perceptions of the world and, by extension, of ourselves. Yet seeking to transform the individual without transforming their social environment is, ultimately, a form of alienation. True “psychonautics”—the conscious exploration of the mind—cannot be confined to the intrapsychic realm. It must widen its lens to encompass the relational and communal matrix that gives the inner journey its meaning. If psychedelics can foster lasting, positive change, that is all the more reason to consider their responsible integration into contemporary clinical practice under rigorous safety frameworks. The future of this research must explore how to incorporate these powerful tools without succumbing to hyper-individualism, remembering that identity is never forged in a vacuum, but in relationship with others. Only then can we navigate the deep waters of the psyche with wisdom and care.