Research

The heart of meaningful progress

Evidence-Based Practice

Research is at the heart of meaningful progress. After decades of prohibition, psychedelic studies are once again emerging as one of the most exciting areas in science and mental health, with psilocybin showing particular promise in supporting healing, deepening self-understanding, and fostering connection.

For us at ETI, research is not an abstract exercise. It is a living part of our work. By bridging practice with science, we generate insights that strengthen therapeutic training, inform best practice, and contribute to the global conversation on psychedelic care.

Psychedelics are powerful tools, and robust research ensures their use is safe, ethical, and grounded in evidence. It also helps destigmatise these experiences and create pathways for their responsible integration into society.

Psilocybin & Attachment Security

Current Research

We are currently partnering with Sebastiaan van Bruchem at XXXX to explore how psilocybin may impact adult attachment styles. Attachment – the way we relate to others, shaped by early experiences – has a profound influence on mental health and therapy outcomes.

This naturalistic study will take place within ETI’s group retreats in the Netherlands. Participants will be invited to take part in research before, during, and after their retreat experience. The study will use validated measures of attachment, wellbeing, and connectedness, combined with participant reflections, to examine psilocybin's impact on attachment security.

If you are interested in participating, you can visit trufflestudy.com or get in touch with us directly.

Lead Researcher: Sebastiaan van Bruchem

Partners: XXXX and Experiential Training Institute (ETI)

Status: Recruitment begins late 2025

Notable Studies

Interior of a circular yurt with wooden beams, light-colored walls, and a skylight. The space features low seating with cushions and blankets arranged in a circle. The floor is covered with white rugs, and there is a central table with candles and flowers.

Small Group Retreat

Amsterdam | October 24th to 26th, 2025

Modern wooden house with large glass windows and a concrete patio, featuring outdoor seating and a potted tree at sunset.

Small Group Retreat

Culemborg | September 26th to 28th, 2025

Interior of a circular yurt with wooden beams, light-colored walls, and a skylight. The space features low seating with cushions and blankets arranged in a circle. The floor is covered with white rugs, and there is a central table with candles and flowers.

Small Group Retreat

Amsterdam | October 24th to 26th, 2025

Safety

We’re a medically supervised team of psychologists and psychiatrists trained in the use of psychedelic compounds.

  • Your psychological, emotional, and physical safety is our priority.

  • A private setting and safe location, and medical centres within 20 minutes distance

  • The care of medical professionals and dedicated staff with a vast knowledge of group dynamics, relationship issues, and attachment trauma, and are experienced in psychedelic medicine

  • Individual attention, with sufficient suitability screening and integration sessions after your psychedelic journey

Curious to find out more?

If you’d like to learn more about our current research or if you are interested in partnering with us, please get in touch below.