Lifespan Integration

By Peggy Pace Founded 2003
Key text Lifespan Integration: Connecting Ego States through Time (Pace, 2003)
Trauma-Focused Focus: Relational + Somatic + Integrative Medium-term (12-30 sessions typical) Individual

Core Mechanism

Proposed: repeated chronological review of life memories gives the nervous system evidence that the danger is over and belongs to the past, shifting implicit body-level expectations about safety and self. The repetition, rather than the content of any single memory, is held to be the active ingredient. This is a clinical hypothesis. It has not been tested against a credible control, and LI's own literature does not settle what the timeline is doing.

Ontology

Fragmented temporal integration: the self is stuck in past time, experiencing old threat as present. The body has not updated its felt sense of when it is.

Therapeutic Voice

"We're going to go through the timeline again. You don't have to say anything or make sense of it. Just notice each cue and let the next one come. If it starts to feel repetitive or like nothing much is happening, that's fine, keep going."

View of the Person

A temporally extended self whose coherence depends on neural integration across the lifespan: when integration breaks down, the self fragments into ego states stuck in past time


Evidence

Not yet listed in major guidelines

Limited; 2 pilot studies, growing case series literature

None yet

Growing rapidly in the Pacific Northwest and internationally. Training requires prior clinical license. Pace developed the approach after observing spontaneous memory timelines during EMDR sessions. Three main protocols: Standard (general integration), Birth-to-Present (attachment repair), and FLOOR (for preverbal/early trauma). The repetition of the timeline, sometimes 8-15 times in a session, is the distinctive mechanism.

PTSD & Acute Trauma
Effect: Preliminary; limited RCT data
Case series suggest rapid reduction
Pace, 2012 (2012)

Conditions

Epistemology

PhenomenologicalPragmatist

Blind Spots

Limited controlled research base; mechanism of action not well understood neuroscientifically; can be over-applied to presentations that need more stabilization first; rapid pace of timeline repetitions may overwhelm some dissociative clients

Contraindications

Active psychosis, unstable dissociative disorders without prior stabilization, clients unable to access early memories or establish a coherent timeline, severe cognitive impairment affecting sequential processing


Training

LI Level 1 (3 days), then Level 2, Level 3. Licensed MH professional required

Lifespan Integration LLC: LI Certified Therapist

Level 1: 21 hrs; Level 2: 21 hrs; cert: additional consultation

$500-700/level; $2K-4K total

Equity & Cultural Adaptations

LGBTQ+ affirming adaptationsCross-cultural adaptations

Philosophical Roots

Siegel (interpersonal neurobiology: neural integration across time); van der Kolk (the body keeps the score: implicit memory); Schore (affect regulation and repair of early attachment); Bowlby (internal working models); Janet (dissociation as temporal fragmentation)

Related Modalities


Lifespan Integration in 1 Comparative Clinical Vignette

Each vignette presents the same client through multiple theoretical lenses side by side — showing how Lifespan Integration formulates presenting problems, sets treatment focus, and sounds in the consulting room compared with other approaches. This comparative pedagogy is unique to Epoché Clinical; no other clinical reference systematically formulates the same case across traditions.

Test Yourself

How does LI differ from EMDR in its approach to traumatic memory?

Show answer

EMDR targets specific traumatic memories for reprocessing via bilateral stimulation. LI uses a chronological timeline of memories (not just traumatic ones) repeated multiple times, allowing the nervous system to integrate the past as past. LI works more with the body's felt sense of time than with specific memory content.


Sources

Pace, P. (2012). Lifespan Integration: Connecting Ego States through Time (5th ed.). Eirene Imprint.