T Group
A Real-Time Relational Laboratory
What is a T-Group?
A T-Group — short for Training Group — is one of the most quietly powerful relational practices ever developed. Born in the 1940s through the work of social psychologist Kurt Lewin, it has been called "the most significant social invention of the century" by Carl Rogers, and has been a cornerstone of leadership development at institutions like Stanford's Graduate School of Business for over 50 years.
The premise is simple, and a little countercultural: a small group of people gather with no agenda, no curriculum, no performance. A skilled facilitator holds the space. And then — the group itself becomes the curriculum.
What you talk about, what you notice, what you feel, how you respond to the person across from you right now — that's the material. T-Group is a live laboratory for human relating. You learn not from a worksheet or a lecture, but from the immediate, unfiltered experience of being in relationship — and actually paying attention to it.
In a T-Group you might discover how you tend to disappear when conflict arises, how your warmth lands on others, or what it feels like to be truly seen without having to earn it. You practice the rare art of staying present — in your body, in contact, in the room — even when it's uncomfortable.
“When you drop your story, who you are arises."
- T-Group participant
This Isn't Your Average Relational Practice
Many T-Group and authentic relating programs do solid work. What this group adds is a clearly somatic, nervous-system–aware layer that most relational containers don’t explicitly include.
Facilitated by Aaron J. Thomas, a somatic psychotherapist with training in Hakomi, Somatic Experiencing, EMDR, and Internal Family Systems—and extensive experience leading T-Groups and founding the Authentic Relating Lab—this group treats the body as primary data. The moment you tighten, go flat, lean in, or hold your breath, that’s information. We slow down and work with it.
This isn’t a psychotherapy group, but it is informed by what makes good therapy effective: presence, attunement, pacing, titration, and the understanding that real change happens in relationship, not just in insight.
The result is a T-group that is nervous-system informed and relationally honest—rigorous enough to be transformative, human enough to be real.
A 75-Year Lineage
T-Group methodology was pioneered at the National Training Laboratories (NTL) in Bethel, Maine, where Kurt Lewin and colleagues discovered that the most powerful learning happened when participants could observe and reflect on their own group dynamics in real time. That accidental discovery — participants asking to join the debrief — became the foundation of a practice that now spans organizational development, psychotherapy, and leadership education worldwide.
"The most significant social invention of the century."
– Carl Rogers, humanistic psychologist, on T-group methodology
Stanford's MBA program has offered T-Group as its most popular elective for over five decades. NTL has trained practitioners across six continents. The authentic relating and relational mindfulness movements of the past two decades all trace their roots to this same core insight: that learning to be with others — really with them — is a skill, and it can be developed.
What Actually Happens in the Room
Each session begins with a simple invitation: be here, notice what's present, and say something true. There's no icebreaker, no prompt, no task to complete. The group finds its own direction — and that process of finding direction is itself the practice.
Notice your patterns
See in real time when you shut down, over-accommodate, defer, or hold back — and get curious about it rather than defended.
Feel your impact
Learn how your presence, your words, your silence actually lands on others — not from theory, but from live, honest feedback.
Stay in your body
Practice tracking your nervous system as you relate — catching the moment you leave yourself, and finding your way back.
Express Authentically
Say the thing that's harder to say. Receive what's harder to hear. Discover that both are survivable — and often connecting.
Four Sundays. Small Group.
When It's Full, It's Full.
Space is intentionally limited.
This is the kind of thing people wish they'd found sooner.
Sundays in March — March 1, 8, 15 & 22
3:00 – 5:00 PM
Smiley Building, Room #32 · Durango, CO
$200 for the full four-week series