Modalities / Trauma-Focused

Lifespan Integration

Peggy Pace · 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

Repeated chronological review of life memories allows the nervous system to integrate traumatic experience into the larger temporal context of a whole life, shifting implicit body-level beliefs about safety and self

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 your timeline again. Just let the images come — you don't need to narrate or analyze them. Your body knows how to do this."

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


Clinical Vignettes

See how Lifespan Integration formulates these cases:

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.