What Is the Best Treatment for Trauma? EMDR vs. CPT
Quick answer: The best-supported treatments for PTSD are trauma-focused therapies, especially Cognitive Processing Therapy (CPT) and Prolonged Exposure (PE), which the American Psychological Association's 2025 guideline lists as first-line. EMDR is also effective but is listed as second-line. Research suggests EMDR works mainly because clients process the traumatic memory, not because of the eye movements.
If you have typed "what is the best treatment for trauma?" into a search bar, you are not alone. Two names come up again and again: EMDR (Eye Movement Desensitization and Reprocessing) and CPT (Cognitive Processing Therapy). Both are evidence-based treatments for posttraumatic stress disorder (PTSD), and both can help.
But the research tells a more nuanced story than many websites do. In this post, we look at what the major treatment guidelines say, what studies have found about EMDR's famous eye movements, and why the active ingredient in effective trauma therapy seems to be something both treatments share: processing the traumatic memory.
What are CPT and EMDR?
Cognitive Processing Therapy (CPT) is a structured, talk-based therapy, usually delivered in about 12 sessions. It helps people identify and work through "stuck points": beliefs that formed after the trauma and keep it painful, such as "It was my fault" or "I can never be safe again." Clients write and talk about the meaning of the event, then examine and revise those beliefs with their therapist.
Eye Movement Desensitization and Reprocessing (EMDR) asks clients to bring a traumatic memory to mind while following a back-and-forth stimulus, typically the therapist's moving fingers, or alternating taps or tones. This is called bilateral stimulation. EMDR proposes that pairing the memory with these movements helps the brain "reprocess" it so it becomes less distressing.
Both therapies have one thing in common: the client deliberately revisits the trauma memory in a safe, structured setting, rather than avoiding it.
What do the treatment guidelines say?
In February 2025, the American Psychological Association (APA) updated its clinical practice guideline for PTSD in adults. The update sorts treatments into tiers (American Psychological Association [APA], 2025):
Tier | Psychological treatments | What it means |
First-line (strong recommendation) | Cognitive Processing Therapy (CPT), Prolonged Exposure (PE), trauma-focused CBT | Many high-quality studies, large effects, highly consistent findings |
Second-line (conditional recommendation) | EMDR, Cognitive Therapy, Narrative Exposure Therapy | Moderate to large effects, but studies vary more in quality and in results on outcomes beyond PTSD symptoms |
In other words, the APA did not conclude that EMDR fails to work. Its panel found moderate to large benefits for EMDR, but judged the overall body of evidence less consistent and of more variable quality than the evidence for CPT and PE (APA, 2025). EMDR was also listed as conditionally recommended in the APA's original 2017 guideline (Guideline Development Panel for the Treatment of PTSD in Adults, 2019).
It is worth being transparent that guidelines do not all agree. Other major bodies, such as the U.S. Department of Veterans Affairs and Department of Defense (Schnurr et al., 2024) and the International Society for Traumatic Stress Studies (Bisson et al., 2019), recommend EMDR alongside the cognitive-behavioural therapies. EMDR researchers have published a critique arguing that the APA's 2025 guideline is an outlier and underrates EMDR (Lee et al., 2026). Large meta-analyses have also found EMDR and trauma-focused CBT to be broadly comparable in reducing PTSD symptoms (Lewis et al., 2020; Mavranezouli et al., 2020).
The APA also found insufficient evidence that any one active, trauma-focused therapy (including CPT, PE, and EMDR) is more effective than another when they are compared head-to-head (APA, 2025). That finding matters for the question of what actually makes these treatments work.
Do the eye movements actually matter?
This is where the research gets especially interesting. EMDR is named after its eye movements, so you might assume they are what make it work. The evidence for that is surprisingly thin.
Researchers test a treatment's "active ingredient" using dismantling studies: they compare the full treatment to the same treatment with one component removed. If outcomes are the same without the eye movements, the eye movements probably are not doing the heavy lifting.
Davidson and Parker (2001) pooled 34 studies in a meta-analysis published in the Journal of Consulting and Clinical Psychology. EMDR beat no treatment and non-exposure therapies, but was no better than other exposure-based therapies. When EMDR was compared to the same procedure without eye movements, the eye movements added no measurable benefit. The authors concluded that the eye movements appear to be unnecessary.
Lee and Cuijpers (2013) challenged that conclusion. Their meta-analysis of 15 clinical trials found a moderate added effect of eye movements (d = 0.41), and a larger effect in 11 laboratory studies of people recalling upsetting memories (d = 0.74). However, the authors themselves noted that the quality of the included clinical studies was not optimal, which may have distorted the results.
Cuijpers et al. (2020), in a later review of 76 EMDR trials, found that only 4 of 27 studies comparing EMDR to control conditions had a low risk of bias, with signs of publication bias. EMDR's advantage over other therapies disappeared when only the low-risk-of-bias studies were considered. The authors concluded EMDR may help PTSD in the short term, but study quality was too low to draw definite conclusions.
The laboratory findings are real: moving your eyes while holding a memory in mind can make that memory feel less vivid and less emotionally intense in the moment, possibly because both tasks compete for limited working memory. But a short-term lab effect is not the same as proof that eye movements are what produce lasting recovery in therapy. That question remains unsettled.
Psychologists have a name for this pattern: a "purple hat" therapy. Imagine adding a purple hat to an already effective treatment, then crediting the hat for the results (Rosen & Davison, 2003). Critics have long used EMDR as the classic example, arguing that its benefits come from the established ingredient (revisiting the memory) rather than the novel add-on (the eye movements).
The real active ingredient: processing the trauma
Put these findings together and a consistent picture emerges. EMDR works, but it seems to work for largely the same reason CPT and prolonged exposure work: the person stops avoiding the memory and processes it, with support, until it loses its power.
Three lines of evidence point this way:
Trauma-focused therapies perform similarly. EMDR shows comparable effects to other exposure-based therapies (Davidson & Parker, 2001), and the APA found insufficient evidence that any one active, trauma-focused therapy outperforms another head-to-head (APA, 2025).
Removing the eye movements changes little in well-controlled clinical studies. The clearest evidence for an added effect comes from lab studies of short-term memory vividness, not from high-quality treatment trials (Davidson & Parker, 2001; Lee & Cuijpers, 2013).
What these therapies share is memory processing. CPT does it through writing, talking, and re-examining the meaning of the event. Prolonged exposure does it through repeatedly recounting the memory. EMDR does it through focused recall in brief sets. The common thread is approaching, rather than avoiding, what happened.
This is good news for anyone seeking help. It means the most important step is not finding a therapist with one particular technique; it is finding a well-trained clinician who will help you safely face and make sense of the trauma, rather than only talking around it.
So which treatment is right for you?
There is no single "best" trauma therapy for everyone. Based on current evidence, here is what we suggest keeping in mind:
Start with a first-line, trauma-focused treatment. CPT and prolonged exposure have the strongest and most consistent research support in the APA's 2025 guideline.
EMDR is a reasonable option, not a lesser one. It is effective, and some people prefer it because it involves less talking about details or homework. Just know that its benefits likely come from processing the memory, not from the eye movements themselves.
Your preferences matter. Guidelines encourage shared decision-making: weighing the evidence alongside your goals, comfort, and circumstances (APA, 2025).
Training matters more than branding. Ask any therapist how they are trained in trauma-focused treatment and how they will help you work through the memory itself.
At One Psychology Clinic in midtown Toronto, our clinicians offer evidence-based, trauma-focused therapy for adults and teens, and we will help you choose an approach that fits you. Complete the New Client Form to talk through your options. We offer CPT, PE, and cognitive therapy.
Dr. Danielle Kofler, C.Psych.
Clinical Psychologist and Clinic Director of One Psychology Clinic
Frequently Asked Questions
What is the most effective therapy for trauma?
Trauma-focused therapies are the most effective treatments for PTSD. The APA's 2025 guideline gives its strongest recommendation to Cognitive Processing Therapy (CPT), Prolonged Exposure (PE), and trauma-focused CBT (APA, 2025).
Is EMDR or CPT better for PTSD?
Both work. CPT has more consistent research support and is a first-line treatment in the APA's 2025 guideline, while EMDR is second-line. When trauma-focused therapies are compared directly, there is not enough evidence that one outperforms the other (APA, 2025).
Do the eye movements in EMDR actually work?
The evidence is mixed. An early meta-analysis found the eye movements added no benefit (Davidson & Parker, 2001). A later one found a moderate effect but noted weaknesses in study quality (Lee & Cuijpers, 2013). Most of EMDR's benefit likely comes from processing the memory.
How many sessions does trauma therapy take?
CPT is commonly delivered in about 12 weekly sessions. The length of any trauma therapy depends on the person, the trauma, and other concerns such as depression.
Where can I get trauma therapy in Toronto?
One Psychology Clinic in midtown Toronto offers evidence-based, trauma-focused therapy in person and virtually across Ontario. Our clinicians can help you choose the approach that fits you best.
References
American Psychological Association. (2025). APA clinical practice guideline for the treatment of posttraumatic stress disorder (PTSD) in adults. https://www.apa.org/ptsd-guideline/ptsd.pdf
Bisson, J. I., Berliner, L., Cloitre, M., Forbes, D., Jensen, T. K., Lewis, C., Monson, C. M., Olff, M., Pilling, S., Riggs, D. S., Roberts, N. P., & Shapiro, F. (2019). The International Society for Traumatic Stress Studies new guidelines for the prevention and treatment of posttraumatic stress disorder: Methodology and development process. Journal of Traumatic Stress, 32(4), 475–483.
Cuijpers, P., van Veen, S. C., Sijbrandij, M., Yoder, W., & Cristea, I. A. (2020). Eye movement desensitization and reprocessing for mental health problems: A systematic review and meta-analysis. Cognitive Behaviour Therapy, 49(3), 165–180. https://doi.org/10.1080/16506073.2019.1703801
Davidson, P. R., & Parker, K. C. H. (2001). Eye movement desensitization and reprocessing (EMDR): A meta-analysis. Journal of Consulting and Clinical Psychology, 69(2), 305–316. https://doi.org/10.1037/0022-006X.69.2.305
Guideline Development Panel for the Treatment of PTSD in Adults, American Psychological Association. (2019). Summary of the clinical practice guideline for the treatment of posttraumatic stress disorder (PTSD) in adults. American Psychologist, 74(5), 596–607. https://doi.org/10.1037/amp0000473
Lee, C. W., & Cuijpers, P. (2013). A meta-analysis of the contribution of eye movements in processing emotional memories. Journal of Behavior Therapy and Experimental Psychiatry, 44(2), 231–239. https://doi.org/10.1016/j.jbtep.2012.11.001
Lee, C. W., de Jongh, A., Farrell, D., Meysner, L., Dominguez, S., & El-Leithy, S. (2026). A critique of the 2025 American Psychological Association clinical practice guideline for the treatment of posttraumatic stress disorder in adults: Underrating EMDR effectiveness. Journal of EMDR Practice and Research, 20, 1–11. https://doi.org/10.34133/jemdr.0034
Lewis, C., Roberts, N. P., Andrew, M., Starling, E., & Bisson, J. I. (2020). Psychological therapies for post-traumatic stress disorder in adults: Systematic review and meta-analysis. European Journal of Psychotraumatology, 11(1), Article 1729633. https://doi.org/10.1080/20008198.2020.1729633
Mavranezouli, I., Megnin-Viggars, O., Daly, C., Dias, S., Welton, N. J., Stockton, S., Bhutani, G., Grey, N., Leach, J., Greenberg, N., Katona, C., El-Leithy, S., & Pilling, S. (2020). Psychological treatments for post-traumatic stress disorder in adults: A network meta-analysis. Psychological Medicine, 50(4), 542–555. https://doi.org/10.1017/S0033291720000070
Rosen, G. M., & Davison, G. C. (2003). Psychology should list empirically supported principles of change (ESPs) and not credential trademarked therapies or other treatment packages. Behavior Modification, 27(3), 300–312. https://doi.org/10.1177/0145445503027003003
Schnurr, P. P., Hamblen, J. L., Wolf, J., Coller, R., Collie, C., [verify middle authors] Papke, K., Petrakis, I., Riggs, D., Sall, J. A., Shiner, B., Wiechers, I., & Kelber, M. S. (2024). The management of posttraumatic stress disorder and acute stress disorder: Synopsis of the 2023 U.S. Department of Veterans Affairs and U.S. Department of Defense clinical practice guideline. Annals of Internal Medicine, 177(3), 363–374. https://doi.org/10.7326/M23-2757
If you’re in crisis right now, call or text 9-8-8 (Suicide Crisis Helpline, available 24/7 across Canada), or go to your nearest emergency department.
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