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EMDR vs. Prolonged Exposure: How Two Trauma Therapies Work and How a Psychologist Chooses

Sep 16, 2026 · Treatment & Recovery

EMDR vs. Prolonged Exposure: How Two Trauma Therapies Work and How a Psychologist Chooses

What Is Prolonged Exposure Therapy?

Prolonged exposure is a specific type of cognitive behavioral therapy that teaches you to gradually approach trauma-related memories, feelings, and situations that you have been avoiding. The therapy operates on a straightforward principle: by facing what has been avoided, you actively learn that trauma-related memories and cues are not dangerous and do not need to be avoided.

PE typically includes two main components. Imaginal exposure involves describing the traumatic event out loud in present tense during sessions while your therapist guides the process. In vivo exposure means confronting feared situations in real life progressively and at a pace you control..

The American Psychological Association's clinical practice guideline designates prolonged exposure as a first-line treatment for PTSD, the strongest recommendation category.

What Is Eye Movement Desensitization and Reprocessing Therapy?

Rather than extended verbal recounting of the trauma, EMDR asks you to briefly focus on the traumatic memory while simultaneously experiencing bilateral stimulation. This is typically guided eye movements that follow the therapist's hand, or alternating tones or taps.

The bilateral stimulation is thought to activate an accelerated learning process. While you hold the memory in mind for short bursts, the emotional intensity and vividness of the memory decrease. You are not trying to suppress the thoughts or analyze them at length. 

EMDR is built on the Adaptive Information Processing model, which holds that PTSD symptoms stem from traumatic memories that were never fully processed and remain isolated in the brain with their original emotions, thoughts, and physical sensations intact. The bilateral stimulation is designed to help the brain resume its natural processing and integrate the memory adaptively.

The U.S. Department of Veterans Affairs and the International Society for Traumatic Stress Studies recommend EMDR as a first-line treatment alongside prolonged exposure. 

How Do Their Effectiveness and Efficiency Compare?

Both therapies work. A 2018 review of evidence-based PTSD interventions found that the average prolonged-exposure-treated patient fared better than 86% of patients in control conditions on PTSD symptoms at the end of treatment (Watkins et al., 2018). Among PE participants across studies, remission rates ranged from 41% to 95%, with 66% more participants achieving diagnosis loss compared to waitlist controls.

For EMDR, research shows it reduces PTSD, depression, anxiety, and stress symptoms with effect sizes comparable to other trauma-focused therapies. Both treatments have been tested across diverse trauma types and populations, and both maintain their gains at follow-up.

How Does a Psychologist Decide Which Treatment to Use?

The choice is not arbitrary. As a clinical psychologist trained in both EMDR and prolonged exposure, here is how I think through it as a clinical psychologist.

  1. What Does the Assessment Show? I start with a thorough, collaborative assessment to understand what kind of trauma or PTSD you are experiencing. Is it a single event or complex, repeated trauma? Are the symptoms acute or chronic? Are there comorbid conditions like depression, OCD, or substance use that shape how treatment should be sequenced? The diagnosis is not just a label — it is a guide to which treatment approach will be the best fit for you.

  2. What Feels Workable for You? Some people are ready to recount their trauma out loud. Others are not. That is not avoidance or resistance; it is a signal about where we start. I also consider your response after the first session. If distress levels drop or increase noticeably after the first few sessions, that’s important data to guide the best treatment for you. 

  3. What Does Trauma Look Like for You? Childhood trauma, complex PTSD, and trauma that is enmeshed with identity, guilt, or shame may call for a different approach than a single-event trauma like a car accident. In those cases, I often integrate trauma-informed approaches — narrative exposure therapy, trauma-informed guilt reduction therapy, or compassion-focused therapy — with EMDR or PE, depending on what the presentation calls for.

  4. Consider combined treatments. The decision to combine treatments depends on what works best for you, where you are at in your mental health journey, and what your goals are. 

Which One Is Right for You?

If you are seeking trauma therapy, the most important first step is an evaluation with an experienced clinician who knows both trauma and differential diagnosis. Trauma symptoms can overlap with anxiety, depression, and OCD, and an accurate picture of what you are experiencing shapes everything that follows.

Both EMDR and prolonged exposure work, and for many people, either one will help. The choice comes down to what your assessment shows, what feels workable given where you are right now, and what your clinician is trained to deliver well. You do not have to know which one you need before you start — that is what the assessment is for.

What you do need is a clinician who has specialized training in trauma, who can explain the options clearly, and who will move at a pace that stays in your control.

Getting Started

Dr. Tam Nguyen-Louie, Ph.D., is a licensed clinical psychologist who provides evidence-based trauma and PTSD treatment, including EMDR and prolonged exposure therapy, via teletherapy for residents of MD, D.C., VA and other PSYPACT-participating states and with limited in-person sessions in Columbia, MD. If you are wondering which treatment approach fits what you are experiencing, reach out to schedule a free 15-minute phone consultation.

References

 

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