Structural Dissociation vs Trauma-Sensitive Yoga
A side-by-side comparison: mechanism, evidence, the conditions each treats, philosophical roots, and where they actually disagree clinically.
At a glance
Structural Dissociation
- Tradition
- Trauma-Focused
- Founder
- Onno van der Hart, Ellert Nijenhuis, Kathy Steele (2006)
- Evidence
- Guideline-recommended
- Focus
- Stabilization + Processing + Integration
- Format
- Individual
- Duration
- Long-term (years for complex presentations)
Trauma-Sensitive Yoga
- Tradition
- Somatic
- Founder
- David Emerson / van der Kolk (2005)
- Evidence
- RCT-supported
- Focus
- Body-Based + Stabilization
- Format
- Group or individual
- Duration
- Variable (typically 10-week group format; individual adaptations exist)
How they work
Structural Dissociation
Core mechanism: Phase-oriented treatment: (1) stabilize ANP functioning and reduce EP intrusions, (2) process traumatic memories to resolve phobia of trauma-related content, (3) integrate dissociated parts into a more unified personality
Ontology: Trauma structurally divides the personality into parts organized around incompatible action systems — daily life management (ANP) and survival defense (EP); healing requires phased integration of what was dissociated
Trauma-Sensitive Yoga
Core mechanism: Repeated practice of noticing and making choices about physical experience within a safe relational context restores interoceptive awareness and the capacity for self-regulation that trauma disrupts
Ontology: Trauma as disruption of the body's capacity to be inhabited safely. Healing requires restoring the relationship to bodily experience through titrated, choice-based somatic practice.
Conditions treated
3 shared · 0 Structural Dissociation-only · 3 Trauma-Sensitive Yoga-only
Both treat
Only Trauma-Sensitive Yoga
What each assumes — and misses
Structural Dissociation
Philosophical roots: Janet (dissociation, fixed ideas, action systems); Myers (shell shock, apparently normal/emotional personality); Bowlby (attachment); evolutionary psychology (action systems); van der Kolk (body keeps the score)
Blind spots: Phase-oriented approach can become indefinite stabilization that avoids processing; the model is complex and requires extensive training; may pathologize adaptive dissociation in some cultural contexts
Therapeutic voice: The part of you that goes to work and pays the bills — and the part that wakes up screaming — they're both you. Right now they don't know each other very well. Our work is to help them communicate.
Trauma-Sensitive Yoga
Philosophical roots: van der Kolk (body keeps the score); Merleau-Ponty (embodied subjectivity); Levine (somatic experiencing); Porges (polyvagal theory)
Blind spots: Certification standards vary; quality of instruction is highly variable outside certified programs; not a standalone treatment; limited RCT replication
Therapeutic voice: Notice if there's anything happening in your body right now. You might try this shape, or something else entirely, or just stay still. Whatever works for you.
Choosing between them
Structural Dissociation (Trauma-Focused) and Trauma-Sensitive Yoga (Somatic) come from different traditions, which means they assume different things about what a person is, what causes suffering, and what the therapeutic relationship is for. The choice between them is often less about "which works better" and more about which set of assumptions fits the client and the therapist.
For deeper coverage: see the full Structural Dissociation and Trauma-Sensitive Yoga pages, or use the interactive comparison tool to add more modalities to this comparison.