EMDR, Coherence Therapy, and IFS in combination and alone.
Psychological trauma can significantly affect how memories, parts of self, and symptoms manifest. Among the evidence-based therapies used for trauma recovery are EMDR (Eye Movement Desensitization & Reprocessing), Coherence Therapy, and Internal Family Systems (IFS). While all three aim to bring about healing, they do so via different mechanisms, models, and assumptions.
EMDR is a structured psychotherapy originally developed by Francine Shapiro in the late 1980s to treat post-traumatic stress.
Key traits:
Additional reading on what EMDR is and how it works can be found here and here.
Coherence Therapy (previously called “depth-oriented brief therapy”) was developed by Bruce Ecker and Laurel Hulley. It is based on a constructivist view: symptoms (emotional, behavioral, cognitive) make sense (“are coherent”) within a person’s deeply held, often implicit mental models.
Key traits:
Although there are fewer large trials and studies (compared to EMDR), the coherence therapy model is well-developed, with a strong theoretical underpinning in both psychotherapy and neuroscience.
For a deeper dive on Coherence Therapy, this is a good article.
IFS, developed by Richard Schwartz, is a model that conceptualizes the mind as made up of “parts” (subpersonalities), such as protectors, exiles, and firefighters, plus a core Self.
Key traits:
For more information on IFS, see this article from Psychology Today.
Although these are distinct modalities, there are important overlaps:
Healing through processing:
Honoring client's internal wisdom and capacity:
Targeting root causes, not just symptoms:
| Dimension | EMDR | Coherence Therapy | IFS |
|---|---|---|---|
| Core Mechanism | Bilateral stimulation + reprocessing via AIP model | Experiential insight into emotional truth + mental-model restructuring | Parts-work: identifying, unburdening, and integrating protective and exiled parts via Self |
| Conceptualization of Symptoms | Pathology arises from dysfunctionally stored memory networks | Symptoms are coherent, purposeful, rooted in implicit emotional truth | Symptoms come from extreme parts (e.g., protectors or exiles trying to help or protect) |
| Goal of Therapy | Reprocess trauma so it no longer causes distress; integrate adaptive information | Bring to conscious felt emotional truth, then restructure so symptoms are no longer needed | Self-led person, with parts relieved of burden and working in harmony |
| Structure of Therapy | Highly structured (8 phases) | More fluid; experiential | Flexible: can be long-term; includes parts dialogues, unburdening, re-integration |
| Empirical Evidence | Strong research base, especially for PTSD | Less large-scale random control trials (RTCs); more case studies and clinical reports | Growing evidence, including a recent pilot study finding IFS reduces PTSD symptoms as well as SUD cravings |
| Safety & Preparation | Requires stabilization, resource building, resourcing phase to stay within window of tolerance | Requires therapist skill to navigate strong affect safely | Risk of “backlash” if protector parts feel bypassed; needs careful pacing and self-leadership development |
The integration of IFS with EMDR is particularly compelling for treating parts-based (e.g., dissociative) trauma. It seems more and more therapists are combining IFS’s parts-work with EMDR specifically (McGoldrick, 2025).
A different combination of Coherence Therapy and IFS is perhaps less popular but still a topic of discussion (Kredler, 2023). I
have personally taken a training with the wonderful Kina Wolfenstein (a licensed clinical social worker who often provides trainings on coherence therapy and other aspects of trauma treatments) on combining IFS with memory reconsolidation.
A core reason to integrate EMDR, IFS, and Coherence Therapy is their shared alignment with the neuroscience concept of memory reconsolidation. Clinician and educator Bruce Hersey has documented and discussed his integrated approach which he says has found “convergent principles” across all three therapies (Developing Meaning, 2023).
Coherence Therapy’s model of memory reconsolidation offers a mechanistic bridge between EMDR and IFS. Specifically, therapists are using Coherence Therapy principles (e.g., “juxtaposition experiences”) to more effectively work with parts (especially protector parts) in the context of trauma, before or during EMDR.
Safety
More Effective Reprocessing
Longevity
Therapeutic Alliance & Client Empowerment
While the blended model has many advantages, there are also practical challenges:
Blending EMDR, IFS, and Coherence Therapy offers a compelling, integrative model for trauma therapy. By leveraging memory reconsolidation as a shared mechanism, this approach provides
The result is not just symptom relief, but transformational healing — a rewriting of emotional learning that feels safer, more relational, and more enduring. For therapists and clients alike, this integration holds powerful promise for trauma recovery.
Ally, D., Tobiasz-Veltz, L., Tu, K., Comeau, A., Bumpus, C., Blot, T., Rice, F. K., Orr, B., Rea, H. S., Sweezy, M., & Schuman-Oliver, Z. (2025). A pilot study of an online group-based internal family systems intervention for comorbid posttraumatic stress disorder and substance use. Front Psychiatry, 16(1544435), 1-10. https://doi.org/10.3389/fpsyt.2025.1544435
Coherence Psychology Institute. (2025, January 6). Published case studies index by symptom, demonstrating the therapeutic reconsolidation process as facilitated in coherence therapy, promptly producing transformational change. https://www.coherencetherapy.org/files/ct-case-index.pdf
Coherence Psychology Institute. (2012). Use of memory reconsolidation in psychotherapy and suggestions for a brain imaging study. https://www.coherencetherapy.org/files/Reconsolidation_in_Therapy_001.pdf
[@cptsdtherapist]. Instagram. https://www.instagram.com/cptsdtherapist/
Got Memory Reconsolidation? (n.d.). TICTI. https://www.ticti.org/got-memory-reconsolidation/
Internal Family Systems Therapy. (n.d.). Psychology Today. https://www.psychologytoday.com/us/therapy-types/internal-family-systems-therapy
Internal Family Systems (IFS) Therapy. (2025, July 4). Psychotraumatology.
https://iptrauma.org/docs/evidence-based-trauma-therapies-and-models/internal-family-systems-ifs-therapy/
Kredler, V. (2023). How does internal family systems therapy lead to transformational change through memory reconsolidation? Counseling Australia, 24(2), 26-36.
McGoldrick, A. (2025). Benefits of BNlending EMDR & IFS. EMDR Insight. https://emdrinsight.com/benefits-of-blending-emdr-ifs/
Recent Research on EMDR Therapy. (n.d.). EMDRIA. https://www.emdria.org/about-emdr-therapy/recent-research-about-emdr/
Research. (n.d.). IFS Institute. https://ifs-institute.com/resources/research
Stoerkel, E. (2019, March 12). What is a Strength-Based approach? Positive Psychology. https://positivepsychology.com/strengths-based-interventions/
What is EMDR? (n.d.) EMDR Training. https://www.emdr.com.au/about/faq/what-is-emdr
What is EMDR? (n.d.). Trauma Recovery. https://www.emdrhap.org/about/what-is-emdr/
Winter, D., & Chernoff, V. (Executive Producers). (2023, December 15). Bruce Hersey: Founder of the syzygy institute: Treating trauma by combining EMDR, IFS, and Coherence Therapy (No. 7) In Developing Meaning. https://www.developingmeaning.com/7-bruce-hersey-founder-of-the-syzyge-institue-treating-trauma-by-combining-emdr-ifs-and-coherence-therapy/
Wolfenstein, K. (n.d.). Coherence Therapy – the art and science of transformational change. Deep Tides Therapy. https://www.deeptidestherapy.com/post/coherence-therapy-the-art-and-science-of-transformational-change
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