For clinicians · Trauma guide

Dissociation & the SARI model — a clinician's guide to phase-oriented trauma treatment

Most complex-trauma work is stabilization work. This guide covers the dissociation continuum, the theory of structural dissociation, and the SARI model — the four-phase scaffold (Safety, Activation, Resolution, Integration) that keeps trauma therapy from collapsing into either flooding or avoidance. It ends with the free tools we built for each phase.

What is dissociation, clinically?

Dissociation is a disruption in the normally integrated functions of consciousness, memory, identity, emotion, perception, body representation, and behavior. The DSM-5-TR frames it as a continuum — not a binary — that runs from everyday absorption (highway hypnosis, getting lost in a book) through trauma-related depersonalization and derealization, to the structural splits seen in complex PTSD and the dissociative disorders.

Functionally, dissociation is a survival response. When fight, flight, or attachment cry-for-help are unavailable — when the threat is inescapable, ongoing, or attached to the caregiver — the system goes offline. The phenomenology that clients describe (going behind glass, watching from the ceiling, going blank, losing time, feeling like a robot, the world looking flat) is not a symptom to be eliminated; it is a strategy that worked once and is now firing in contexts where it costs more than it gives.

The dissociation continuum

Structural dissociation theory

Onno van der Hart, Ellert Nijenhuis, and Kathy Steele (The Haunted Self, 2006) reframed dissociation as the failed integration of two action systems: the system for daily life (the Apparently Normal Personality, or ANP) and the system for defense (the Emotional Personality, or EP). Three levels:

The clinical implication is the same at every level: you build cooperation between the ANP and the EPs before you process the trauma the EPs hold. Skip this and the EPs flood, the ANP collapses, and the client either drops out or destabilizes.

Signs of dissociation in session

• Eyes glaze, gaze unfixes, blink rate drops or freezes.
• Voice flattens, prosody disappears, latency increases.
• Client repeats your last word back without processing it.
• Affect mismatches content — describing the assault while smiling.
• Sudden temperature shift (cold hands, sweating), pallor, slack jaw.
• Loss of time-tracking ("we just started — wait, it's been 40 minutes?").
• "I'm fine" delivered from a great distance.
• Posture collapse — slump, freeze, or rigid stillness.

When you see these, stop the content. Orient first: "Notice the room. Notice my voice. What's the date? Press your feet into the floor." Re-establish window of tolerance before going back to anything.

The SARI model — four phases of trauma treatment

SARI was articulated by Maggie Phillips and Claire Frederick in Healing the Divided Self (1995) as a four-phase scaffold for trauma therapy. It sits inside the broader phase-oriented consensus (Herman's three stages; the ISTSS Complex PTSD guidelines) but adds an explicit Activation phase — a deliberate ramp of internal resources and ego strength before any processing.

S — Safety & Stabilization

The longest phase. Often the only phase. The goal is to establish external safety (housing, substances, self-harm, interpersonal violence), internal safety (window of tolerance, grounding skills, sleep, distress tolerance), and therapeutic safety (a working alliance the client can actually rest in).

• External safety: housing, food, ongoing IPV, active SI — addressed first.
• Crisis plan / safety plan on file (Stanley–Brown format).
• Window of tolerance mapped — client can name hyper, hypo, and window states.
• Two reliable grounding skills the client can use without you in the room.
• Trigger map — what fires what, with at least three internal coping responses each.
• Containment skill — safe place imagery, container exercise, or somatic vault.
• Sleep, substance, and self-harm baselines stable or improving.
• Psychoeducation: window of tolerance, fight/flight/freeze/fawn, dissociation continuum.

A — Activation & Accessing

The bridge phase that distinguishes SARI from simpler three-stage models. You activate internal resources (protective figures, nurturing figures, wise self, spiritual / cultural resources, the future self) and gently access the trauma material that protectors are willing to show. This is the IFS / ego-state move: meet the part holding it, get its consent, ramp the resource that will hold the work.

• Resource installation: protector figure, nurturer figure, future self, spiritual resource.
• Affect tolerance built one tolerable degree at a time (titration).
• Parts / ego-state mapping — who holds what; who is willing to let what be seen.
• Inner conference: ANP and EPs (or protectors and exiles) on speaking terms.
• Pendulation: client can move between activation and resource without flooding.
• Consent secured from protector parts before any reprocessing.
• EMDR Phase 2 / resource development & installation work fits here.

R — Resolution / Reworking

The processing phase. Whatever your modality — EMDR reprocessing, prolonged exposure, cognitive processing therapy, somatic experiencing, IFS unburdening — this is where trauma material is metabolized and the meaning re-encoded. Done out of order (before Phase 1 / 2 are solid) it is the single most common cause of trauma treatment failure.

• Modality-specific protocol (EMDR Phase 3–6, PE in-vivo + imaginal, CPT stuck points, IFS unburdening).
• Dual attention / titration / pendulation maintained throughout.
• Session ends in the window — never leave a client mid-activation.
• Between-session containment plan reviewed each session.
• Body-level resolution tracked (SUDS down, VOC up, no residual somatic charge).
• Specifically check: has anything new dissociated or split off?

I — Integration & New Identity

The post-trauma identity phase. The client is no longer organized around the trauma; now what? Integration is relational, vocational, somatic, and meaning-making work. For structurally dissociated clients it is also where ANP and EPs continue cooperating in daily life — co-consciousness without crisis.

• New self-narrative articulated — not 'survivor' as fixed identity, but post-trauma agency.
• Relational repair: attachment behaviors revisited with safer people.
• Values work, vocational work, parenting work as appropriate.
• Somatic integration: body felt as home, not as threat or stranger.
• Relapse / re-activation plan — what early signs mean, what to do, when to return.
• Termination as a phase, not an event.

How SARI maps onto other models

Free tools by SARI phase

Every tool below saves per client and can be sent between sessions. Pick by phase; don't skip phases.

Phase 1 — Safety & Stabilization

Phase 2 — Activation & Accessing

Phase 3 — Resolution / Reworking

Reprocessing happens in-session with your modality of choice. Between sessions, the tools above (grounding, parts map, safe place) hold the container.

Phase 4 — Integration

Values, meaning-making, and relational work — the values list and core values list are good starting frames here.

Common pitfalls

1. Processing before stabilization. The single most common cause of trauma-therapy harm. If the client doesn't have grounding skills, a window-of-tolerance map, and at least one internal resource, you are not yet in Phase 3.
2. Mistaking compliance for stabilization. A client who says "I'm fine, let's go deeper" from a collapsed posture is dissociated, not ready. Read the body, not the words.
3. Breath-work during active dissociation. Interoceptive techniques deepen depersonalization for many trauma survivors. Use cold, taste, orienting, and external sensory anchors during active dissociation; save breath for between-session resourcing.
4. Skipping protector consent. If you go after the exile / EP without the protector's permission, the protector escalates — numbing, dissociation, missed sessions, somatic flare. Always ask the protector first.
5. Treating dissociation as resistance. It isn't resistance; it is a protective response that worked once. Name it, normalize it, work with it.
6. Ending sessions out of the window. Always close with 5–10 minutes of orienting, grounding, and a between-session plan. Never send a client into the parking lot mid-activation.

Frequently asked questions

What is the SARI model?

SARI is a four-phase scaffold for trauma therapy developed by Maggie Phillips and Claire Frederick (1995). The phases are Safety & Stabilization, Activation of resources & accessing of trauma, Resolution / Reworking of traumatic material, and Integration / new identity. It maps onto Judith Herman's three-stage model (safety, remembrance/mourning, reconnection) but adds an explicit 'activation' phase for building internal resources before processing — making it especially well-suited to clients with dissociation or complex trauma.

What is dissociation, clinically?

Dissociation is a disruption in the normally integrated functions of consciousness, memory, identity, emotion, perception, body representation, and behavior. It exists on a continuum — from everyday absorption (highway hypnosis) through trauma-related depersonalization and derealization, to the structural dissociation seen in complex PTSD and dissociative disorders. It is a survival response: when fight/flight isn't available, the system goes offline.

What is structural dissociation?

Structural dissociation (van der Hart, Nijenhuis & Steele, 2006) describes the trauma-driven split between an Apparently Normal Personality (ANP) — the part going to work, raising the kids — and one or more Emotional Personalities (EPs) holding the trauma. Primary structural dissociation = one ANP + one EP (single-incident PTSD). Secondary = one ANP + multiple EPs (complex PTSD). Tertiary = multiple ANPs + multiple EPs (DID). The clinical implication: you stabilize the ANP and build internal cooperation with the EPs before any reprocessing.

When should I stabilize before processing trauma?

Almost always. Phase 1 (Safety & Stabilization) is the longest phase for most clients and the only phase for many. Skip stabilization and the client either destabilizes (worsening dissociation, self-harm, suicidality, substance use) or shuts down (numbing, dropout). Move to processing only when the client can: (1) stay in the window of tolerance for most of session, (2) ground themselves between sessions, (3) name and contain triggers, and (4) have at least one reliable internal or external resource. The reality is most complex-trauma work is Phase 1.

What's the difference between depersonalization and derealization?

Depersonalization is the felt sense of being detached from yourself — watching from outside the body, emotional numbing, feeling like a robot, body parts feeling unreal. Derealization is the felt sense that the external world is unreal — dreamlike, foggy, behind glass, two-dimensional. Both are subtypes of dissociation and often co-occur. Both are typically benign as transient responses but warrant clinical attention when chronic.

Which grounding techniques actually work for dissociation?

Strong sensory anchors and orienting beat breath-based or interoceptive techniques. Cold (ice cube, cold water on wrists), sour or spicy taste, weighted blanket, naming the date and the room out loud, eye contact with a safe person, pressing feet into the floor. Avoid breath-focus and body scan during active dissociation — they often deepen it. Save those for between-session resourcing once the client is back in the window.

Is the SARI model evidence-based?

The phased approach to trauma treatment — stabilize, process, integrate — is endorsed by the ISTSS Complex PTSD Treatment Guidelines, the UK NICE guidelines for PTSD with complex presentations, and major texts in the field (Herman, van der Hart, Courtois, Ford). SARI is one specific articulation of that consensus; it is not a manualized RCT-tested protocol, but the underlying phased framework has the strongest evidence base for complex trauma.

Read deeper

• What is dissociation? (client explainer) — plain-language version to share with clients.
• Window of tolerance (client explainer) — the core stabilization concept, made client-shareable.
• Polyvagal ladder — ventral / sympathetic / dorsal as the language for state-tracking.
• IFS parts work — the parts framework that maps cleanly onto Phase 2 activation work.
• Nervous system regulation — bottom-up stabilization tools.
• Grounding techniques — the 30-exercise reference — sorted by what works for what.
• Trauma therapy hub — EMDR, CPT, PE, IFS, somatic; cases, worksheets, client explainers.