NARM vs Structural Dissociation

A side-by-side comparison of recorded mechanisms, evidence review status, related condition topics, and philosophical roots.

By Expert review not yet recorded Updated

At a glance

Source checks, condition-specific assessments and expert review are separate steps. Each assessment applies only to its stated population and use. Topic links do not establish comparative effectiveness.

NARM

Tradition
Somatic
Founder
Laurence Heller (2012)
Review status
Assessment not yet completed
Focus
Developmental + Relational + Somatic
Format
Individual
Duration
Medium to long-term

Structural Dissociation

Tradition
Trauma-Focused
Founder
Onno van der Hart, Ellert Nijenhuis, Kathy Steele (2006)
Review status
Framework — unranked
Official sources
Guidelines and official sources (1)

1 clinical guideline check

Read the recommendation and its scope. A source may discuss an approach without recommending it.

  • Guidelines for Treating Dissociative Identity Disorder in Adults, Third Revision

    International Society for the Study of Trauma and Dissociation · 2011 · Clinical guideline · Etiological models; journal page 123

    Discussed in the source

    Structural dissociation is discussed as one etiological model. This does not make it a separately recommended treatment or the sole basis of the guideline.

    Scope: Conceptual models of adult dissociative identity disorder.

    Source checked

Focus
Stabilization + Processing + Integration
Format
Individual
Duration
Long-term (years for complex presentations)

How they work

NARM

Core mechanism: Simultaneously tracking somatic experience, relational patterns, and identity-level beliefs reveals how developmental survival styles organized around early unmet needs are maintained in the present

Ontology: Early attachment failures create survival styles that organize identity, relationships, and somatic patterns into predictable configurations; the self-structure formed around deprivation, not the original events, is what maintains suffering

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

Related condition topics

These editorial cross-references organize reading. A shared link does not mean both approaches are effective, recommended, or interchangeable for that condition.

1 shared · 2 NARM-only · 2 Structural Dissociation-only

Linked to both entries

Complex Trauma / Developmental Trauma

Linked only in the NARM entry

Attachment & Relational PatternsPersonality Disorders

Linked only in the Structural Dissociation entry

Dissociative DisordersPTSD & Acute Trauma

What each assumes — and misses

NARM

Philosophical roots: Heller (developmental trauma and identity); Levine (Somatic Experiencing, where Heller trained and taught before developing NARM); Reich (character armor, reimagined developmentally); Bowlby (attachment); Schore (affect regulation); Winnicott (true self/false self); Lowen (bioenergetics, reframed)

Blind spots: Limited empirical evidence; five survival styles risk becoming rigid typology; developmental focus may not address acute symptom presentations; less helpful for single-incident trauma

Therapeutic voice: You're telling me about this pattern of always taking care of others. As you say that, what do you notice happening in your body? And I'm curious: what happens inside when you imagine someone wanting to take care of you?

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 training specifically in dissociative disorders rather than general trauma training, and is not safe to improvise without it; presentations where a simpler trauma treatment would be sufficient are a fit question rather than a safety one; 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.

Choosing between them

NARM (Somatic) and Structural Dissociation (Trauma-Focused) 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 NARM and Structural Dissociation pages, or use the interactive comparison tool to add more modalities to this comparison.