Purpose & objective.
Herman's Phase 2 is the entire memory-work stage. Shapiro's Phase 4 ~ desensitization ~ is the active reprocessing engine that lives inside it: activate a target memory, run sets of alternating bilateral stimulation while the client follows whatever associative chain emerges, check in briefly between sets, repeat until the memory is no longer disturbing.
The objective is reconsolidation: the memory is still accessible, but its emotional charge is dramatically reduced and its meaning has been updated. Done well, it is one of the most efficient interventions in the trauma-therapy toolkit. Done badly, it destabilizes.
The standard arc (Shapiro 3–8 inside Herman 2).
Assessment (Shapiro 3: image, NC, PC, VOC, emotion, body location, SUD) → desensitization sets (Shapiro 4) → installation of an adaptive cognition (Shapiro 5) → body scan (Shapiro 6) → closure (Shapiro 7) → reevaluation (Shapiro 8) at the next session before moving to the next target. The clinician follows associative chains, interweaves when the chain stalls (mostly imaginal, occasionally cognitive ~ see Modifications below), and tracks the client's window of tolerance throughout.
See The 8 Phases for the original framing of each step.
Modifications worth knowing.
EMD vs. EMDr
EMD (Eye Movement Desensitization) keeps the client returned to the original target between sets, restricting the associative chain. Useful with clients who decompensate when associative material runs wide.
EMDr (Eye Movement Desensitization & Reprocessing) is intermediate ~ limited chaining but not full restriction. The standard 8-phase protocol is full reprocessing.
Flash technique (Manfield)
Used when standard processing is too activating. The client briefly touches the target image and "flashes" away with a positive engagement (eye blinks, focused breath) while the clinician runs short ABLS. Lower charge, often usable with clients who can't tolerate standard desensitization.
Restricted / contained processing for dissociative clients
Shorter sets, slower pace, more frequent grounding checks, smaller targets (a fragment rather than a whole memory), continuous BHS monitoring. The goal is processing without leaving the window of tolerance.
Interweaves ~ mostly imaginal, occasionally cognitive
Standard EMDR teaching collapses "interweave" into cognitive interweave ~ a clinician-introduced question or perspective when processing stalls ("Whose responsibility was that?" "How old are you in the memory? How old are you now?"). That is one type, and the loudest one in the literature.
In my workbook I name eight kinds of interweave, and the cognitive one is the minority. Most are imaginal ~ delivered through resourcing, not questioning:
- Experiential ~ visualize what was needed at the time; reimagine a different outcome.
- Emotion regulation ~ grounding, calm/safe place, breath, mindfulness mid-set.
- Defense ~ honor the client's protective "creative adaptations" (Perls' phrase, Gestalt origin); IFS protector/manager/firefighter framing.
- Repair ~ the adult client consoles or protects her younger self.
- Relational ~ the therapist's steady presence; explicit naming of the relationship.
- Cognitive / informational ~ brief psychoeducation, age check, perspective question.
- Integration ~ helping the client see how they have evolved through the experience.
- Action-oriented ~ completing thwarted fight/flight; somatic action paired with short ABLS.
Read in this light, "interweave" is mostly imaginal resourcing brought into Shapiro 4. Use sparingly in either direction; let the client do the work.
Installation ~ in the modified script there is no original PC.
The script's actual sequence: identify image → emotions → body sensations → NC → skip SUDS → desensitize (continuous tactile, varied rate) → near the end, when the affect has substantially subsided, get a SUDS → then ask the client what they now believe about themselves with the image up. That is the PC. PC here stands for Present, Adaptive Cognition ~ not a pre-chosen positive belief. The VoC is skipped entirely.
What this means in the room
With complex trauma we are not necessarily going to get a globally positive cognition. We are going to get anadaptive cognition ~ something the system actually believes now that the charge has come down. It may be small. It may be specific. It may not sound triumphant. That's fine. Pair it with the original image and run short tactile sets.
Because there is no pre-elicited PC to be "wrong," the question is never "what if the PC won't install?" The question is why isn't an adaptive cognition emerging? Two grounded possibilities: (a) desensitization isn't complete ~ SUDS is not yet at 0–1; return to Shapiro 4. (b) The system isn't yet ready to land an adaptive frame. Close cleanly, revisit next session. Do not put words in the client's mouth.
Complex trauma ~ when to bend.
The standard protocol assumes a single-event target memory in a regulated client. Complex trauma ~ chronic, relational, often beginning in childhood ~ fits that assumption poorly. The literature on EMDR in complex PTSD (Korn, Knipe, Forgash, Twombly) consistently emphasizes longer Phase 1, smaller targets, more interweaves, and tighter dissociation monitoring.
Looping & abreaction.
Looping ~ the same content cycling without movement ~ is a sign the chain is stuck. Try a shift in ABLS modality (e.g., from tactile to auditory, or change the speed), a brief interweave, or a return to the target. If looping persists, stop and close.
Abreaction ~ strong emotional release ~ is not in itself a problem; it can be part of processing. The problem is abreaction without dual awareness. The client should be experiencing the material, not back inside it. BHS check, ground, slow the pace.
Closing an incomplete session.
Sessions don't always reach SUD = 0. That's fine. What's not fine is leaving a client open at the end of the hour. Use a closure procedure ~ calm/safe place, container, light stream ~ and verify the client is back in the window of tolerance before they leave the room. Plan re-entry next session.
Phase 2 assumes Phase 1 is done. If you're not certain your client is ready ~ five readiness domains, seven hard contraindications, and a full regulation toolkit are on the Stabilization page.