Phase 1: History-taking and treatment planning

A clinician new to EMDR often wants to get to the eye movements. The reprocessing is where the visible change happens, so it feels like the real work. But experienced EMDR therapists will tell you the opposite: the outcome is largely decided in Phase 1, before any stimulation begins. Get the map wrong and no amount of skillful desensitization will take the client where they need to go.

Phase 1 is history-taking and treatment planning. Its job is to understand the client's presentation, screen for readiness and safety, and identify the specific memories — the targets — that feed the current symptoms.

Reading the presentation through an AIP lens

You take a standard clinical history, but you listen differently. Working from the Adaptive Information Processing model, you're listening for the experiences that got stored unprocessed and are still firing today. A panic response, a rigid negative belief, an outsized reaction to an ordinary trigger — each is a thread you follow back to its origin.

The symptom points at the memory. Your job in Phase 1 is to follow the pointing finger, not to stare at the finger.

Screening before you commit

Not every client is ready to reprocess in the next session, and Phase 1 is where you find out. You screen for dissociation — many clinicians use the DES-II — because unrecognized dissociative structure is the most common reason EMDR destabilizes someone. You assess affect tolerance, current life stability, secondary gain, medical factors, and whether the client has enough of a support system to hold the work between sessions.

If stability is thin, you don't abandon EMDR; you spend longer in Phase 2 building it. Phase 1 tells you how much preparation this particular person needs.

Building the target sequence plan

The deliverable of Phase 1 is a target sequence plan (TSP). You cluster the client's symptoms around negative cognitions — I'm not safe, I'm powerless, I'm not good enough — and for each cluster you identify three time frames:

• The touchstone — the earliest memory that laid the belief down.
• Representative past events that reinforced it.
• Present triggers that set it off now.
• And the future template — how the client wants to respond once the charge is gone.

Sequencing usually runs oldest-first. Reprocessing the touchstone often collapses the emotional charge on the later memories in the same channel, because they share a network. That's the leverage a good TSP gives you.

Where the work can go wrong

Rushing Phase 1 to get to reprocessing is the classic error. So is over-collecting — spending six sessions on history when the client is ready and waiting. Phase 1 is proportionate: a single-incident trauma needs a lighter map than a developmental history spanning decades.

Once the map is drawn and the client is prepared, you move to Phase 2: Preparation. If you want the wider frame first, revisit what EMDR is and the model it rests on.