Written Exposure Therapy for PTSD: How a Five-Session Treatment Works
Last reviewed: 10/27/2026
Reviewed by: Dr. Kiesa Kelly
Maybe you have read that trauma therapy takes three months of weekly sessions, plus homework between them, and you are not sure you can face that. Maybe you started a longer course once and stopped partway through. Written Exposure Therapy for PTSD, usually shortened to WET, takes a different shape: five sessions, about 30 minutes of writing in each, and no assignments between sessions [1][2]. It is one of the options our trauma therapy team uses, and this article explains what it involves and who it tends to fit.
The decision underneath is real. A shorter treatment is easier to finish, and finishing matters. But fewer sessions is not automatically the right fit for everyone, and the research behind WET is younger than the research behind the longer therapies. You deserve the honest version of both sides.
In this article, you'll learn:
What WET is and why writing about one memory can reduce PTSD symptoms
Three common misconceptions about the treatment
What happens in session 1, and in sessions 2 through 5
How WET compares with prolonged exposure, CPT and EMDR
When WET is a strong fit, and when something else may fit better
What to ask a therapist before you start
The short answer: what Written Exposure Therapy for PTSD is
WET is a structured, exposure-based therapy for posttraumatic stress disorder. You write about one specific traumatic event, the "index" trauma, for 30 minutes in each session, following scripted instructions from your therapist [1]. In the trials that tested it, it was delivered as five weekly sessions [2][3]. It was developed by psychologists Denise Sloan and Brian Marx at the VA's National Center for PTSD, who also wrote the treatment manual [1]. An early randomized trial, in 46 adults with PTSD after car crashes, found large reductions in symptoms compared with a waitlist [10]. WET is one of several trauma-focused options; our overview of PTSD treatment options and how to choose puts them side by side.
It has been compared head to head with two of the most established PTSD therapies. It was found "noninferior" (not meaningfully worse) to cognitive processing therapy in civilians and veterans [2] and in active-duty service members [3], and to prolonged exposure in veterans [4]. In all three trials, fewer people dropped out of WET [2][3][4]. A 2024 systematic review from the developers' group counted 17 published studies of WET, seven of them randomized trials [8].
🧭 Key takeaway: WET is a short, scripted exposure therapy for PTSD. It is not a shortcut around the trauma memory. It goes straight at it, in smaller doses.
Three misconceptions about WET
"Writing therapy is just journaling." In reality, WET is a manualized treatment with specific instructions for each session, delivered by a trained therapist who reads your narrative and gives you feedback on it [1][2]. Free-form journaling at home is a different thing.
"Five sessions can't do much for something this big." The trials suggest otherwise. In the 2018 trial, five sessions of WET were noninferior to 12 sessions of CPT, and the gains held through 60 weeks [2][5]. That does not mean five sessions are enough for everyone, and PTSD often does not resolve completely after any of these therapies. It means the number of sessions is not the only thing that drives results, and that tracking your symptoms, for example with the PCL-5 PTSD screener, is more informative than counting sessions.
"No homework means nothing happens between sessions." There are no assigned tasks between sessions [1]. But your therapist will ask you to let trauma-related thoughts, feelings and memories come up between sessions without pushing them away [1]. Many people also find themselves facing places or situations they had been avoiding without being asked to [1].
How WET works
Writing about one trauma, 30 minutes at a time
Each session centers on 30 minutes of uninterrupted writing about the same event [1][2]. In the early sessions, the instructions ask you to write the details of what happened and the thoughts and feelings you had at the time. In the later sessions, the focus shifts to how the event has affected your life since [4].
Here is what that can look like. You sit at your desk, the door closed, with the video call open and your therapist on screen. The instructions ask you to start at the moment the car crossed into your lane. For the first few minutes you write around it: the weather, the song on the radio. Then you write the sound of the impact, the smell of the airbag, the moment you could not find your daughter's voice from the back seat. Your hand slows down. Your chest tightens. You keep going, because the instructions say to stay with it, and after a while you notice the wave has crested and is starting to fall. When the 30 minutes end, you and your therapist talk about what it was like.
What it targets: avoidance of the memory
PTSD keeps going partly because the memory feels dangerous, so you avoid it, and the avoidance stops your brain from learning otherwise. The VA's National Center for PTSD describes what repeated writing is meant to teach: that the memory is not dangerous, that the distress it brings is temporary and fades on its own, and that strong feelings can be tolerated [1]. It may also help people find new ways to think about what happened and what it means [1].
🔁 Key takeaway: The writing is the exposure. Returning to the same memory in a structured way, session after session, is thought to be what lets the fear around it shrink.
What the five sessions look like
Session 1 versus sessions 2 to 5
Session 1 is longer, usually about an hour. Your therapist explains PTSD, how avoidance keeps it going, and why the treatment works the way it does. The writing focuses on one specific traumatic event. Then you do your first 30 minutes of writing, followed by a short check-in [1][2].
Sessions 2 through 5 are shorter, roughly 40 to 50 minutes [1][2]. Each one starts with feedback on your last narrative: did you stay with the event, and did you include what you were thinking and feeling? Then you get that day's instructions, write for 30 minutes, and talk briefly about how it went [1]. In the 2023 trial against prolonged exposure, therapists could add one or two sessions if someone had not yet written about the trauma itself, and WET completers in that trial averaged about six sessions [4]. Five is the core protocol, not a hard limit.
What progress looks like, and what a rough week can feel like
Progress is often uneven. Here is one way it can unfold. After your first session, you sleep badly for two nights and the memory feels louder than it has in months. By the third session, writing the same scene still hurts, but you notice your hands are steadier and you no longer need to stop. By the fifth, you are writing about what the accident changed: the job you left, the way you grip the wheel. Somewhere along the way you drove past the intersection without planning to, and nothing terrible happened.
In clinical practice, a temporary rise in memories, nightmares or irritability early in exposure work is common, and it is worth telling your therapist about rather than quietly pushing through. It does not mean the treatment is failing. If you ever have thoughts of harming yourself, or feel unsafe, contact your therapist right away, call or text 988, or call 911 in an emergency.
It also helps to know what "better" means in the research. In the 2023 trial, about half of people in both the WET and prolonged exposure groups still met criteria for PTSD at 20 weeks, and about 6 in 10 did at the final 30-week check, even though symptoms had dropped substantially in both [4]. That is typical of PTSD trials with veterans, and it is a reason to measure how you are doing rather than assume.
📈 Key takeaway: In our clinical experience, a rough week early on is common and is not a sign of failure. Tell your therapist, and track your symptoms over time rather than judging by one bad night.
How WET compares with prolonged exposure, CPT and EMDR
All three established therapies ask you to engage with the trauma, but they differ in dose and method:
Prolonged exposure (PE) typically runs 8 to 15 sessions of 90 minutes, with longer in-session retelling and real-world exposure assignments between sessions [4]. Our step-by-step guide to prolonged exposure therapy walks through it.
Cognitive processing therapy (CPT) usually runs 12 sessions in which you learn to recognize and challenge unhelpful beliefs about the trauma, yourself, other people and the world, with assignments between sessions [2]. Our article on how EMDR and CPT compare covers it in depth.
EMDR pairs focused attention on the memory with bilateral stimulation, typically eye movements [7]. You can read more on our EMDR and bilateral stimulation page.
How the guidelines rank them is where WET's younger evidence base shows. The 2023 VA/DoD guideline gives its strongest recommendation to PE, CPT and EMDR [6]. According to a National Center for PTSD summary written by WET's developers, it recommends WET as a second-line option [1]. The American Psychological Association's 2025 guideline recommends CBT, CPT and PE, suggests cognitive therapy, EMDR and narrative exposure therapy, and does not list WET in either group [7]. The same developer-written summary reports that the APA panel found too little evidence to recommend for or against WET, mainly because few studies compared it with a waitlist or usual care, while acknowledging no difference in effect compared with PE and CPT [1].
Two more cautions belong next to the good results. The three head-to-head trials above were led by the team that developed WET, and the 2023 authors themselves call for studies by independent investigators [4]. And in a large 2025 trial in primary care clinics, only about 3 in 10 patients assigned to WET completed all the sessions, though WET and antidepressant medication both reduced symptoms [9]. Low dropout in research settings does not guarantee the same in everyday care.
⚖️ Key takeaway: WET has held its own against PE and CPT in trials, with fewer dropouts. It also has a smaller, newer evidence base, and guidelines are more cautious: VA/DoD lists it as second-line, and the APA makes no recommendation for or against it.
Who it is right for
When it is a strong fit
WET tends to fit when PTSD centers on one event, or one event that stands out above the others, and you are ready to face it in a contained way. It can suit people whose schedules or energy make 12 to 15 sessions with homework hard to sustain [2][4]. It may also suit people who would rather write than say the details out loud.
Consider this example. You are a nurse who was assaulted by a patient two years ago. You still flinch when someone comes up behind you, you skip shifts on the unit where it happened, and you lie awake replaying it. You tried a longer therapy last year and dropped out after the homework piled up during a run of night shifts. You do not want to talk about the details aloud, but you think you could write them. A brief protocol with no assignments between sessions may be the version of trauma treatment you can actually finish.
When something else may fit better
The trials excluded people at high risk of suicide, people with active psychosis or unstable bipolar disorder, people with severe cognitive impairment, and people with severe substance use problems [2][4]. If any of those apply, safety and stabilization come first, and a clinician should help decide the order of care. If you are having thoughts of suicide right now, call or text 988, or call 911 in an emergency. A different approach may also fit better if:
your trauma involved many repeated events over years, and no single event stands out
guilt, shame or self-blame is the heaviest part, which CPT targets directly
you have tried exposure and want a different mechanism, such as EMDR
you prefer more sessions and more time with a therapist
Use this rule of thumb. If one event drives most of your symptoms and a long course has been hard to start or finish, ask about WET. If the beliefs left behind, such as "it was my fault," weigh more than the memory itself, ask about CPT. If you have several overlapping traumas or have struggled in exposure therapy before, ask a trauma clinician to help you weigh PE, CPT and EMDR together.
🧩 Key takeaway: WET fits best when one memory is driving the symptoms and a brief, contained course is what you can commit to. It is one good option, not the only one.
Questions to ask before you start
Whichever approach you are considering, these questions help you see how a therapist would tailor it to you. Our specialized therapy services describe the trauma-focused options we offer.
"Which trauma-focused therapies do you offer, and why would you suggest WET for me rather than PE, CPT or EMDR?"
"How will we choose the event I write about if I have more than one?"
"If we work by video, how do I share my writing with you securely?"
"How will we measure whether it is working, and what happens if I still have significant symptoms after five sessions?"
"What should I do if symptoms flare between sessions?"
Next step: getting support
Choosing a trauma therapy can feel like one more hard thing to get right. You do not have to pick the perfect one on your own. What matters most is a treatment you can start, and finish, with a clinician who knows how to adjust if things get hard.
We offer Written Exposure Therapy alongside other trauma-focused approaches, and a consultation can help you decide whether its brief format fits what you are carrying.
Carrying something that still feels close?
Trauma-focused care — including approaches like EMDR — can help you process what happened at a pace that feels safe, with a clinician who understands trauma responses.
Frequently Asked Questions
Is written exposure therapy the same as journaling about my trauma?
No. Journaling or expressive writing is open-ended and usually done alone. In WET, a trained therapist gives you specific instructions for each 30-minute writing period, reads what you wrote, and gives feedback on how closely you followed the instructions. You keep returning to the same event in detail, which is what makes it an exposure treatment rather than general writing for well-being.
Can I do written exposure therapy by telehealth?
Yes, for many people. In the 2023 trial comparing WET with prolonged exposure, most participants did their sessions by video. The VA's National Center for PTSD advises staying on camera, sharing the narrative with your therapist after each session, and getting personal feedback. Phone-only WET, without video, is not currently recommended.
Do I have to be a good writer to do written exposure therapy?
No. Spelling, grammar and style are not the point, and nobody grades your writing. The therapist's feedback is about whether you followed the instructions, such as staying with the event and including what you thought and felt at the time. If writing by hand is hard for you, ask your therapist whether typing is an option, since typed and handwritten narratives are still being compared in research.
Does written exposure therapy help with depression that comes with PTSD?
It can. In one trial, people who received WET or cognitive processing therapy both showed significant drops in depressive symptoms over the 60-week study, though symptoms fell faster with CPT. Depression that is severe, or that comes with thoughts of suicide, needs its own attention first. If you are having thoughts of suicide, call or text 988, or call 911 in an emergency.
About the Author
Dr. Kiesa Kelly is a licensed clinical psychologist and the founder of ScienceWorks Behavioral Healthcare. Her clinical work centers on trauma-related conditions, obsessive-compulsive spectrum disorders, anxiety and neurodevelopmental assessment in adults and adolescents, and her interest in trauma treatment focuses on matching each person to the trauma-focused protocol that fits their presentation and readiness, rather than defaulting to a single approach.
Dr. Kelly earned her PhD in clinical psychology, with a concentration in neuropsychology, from Rosalind Franklin University of Medicine and Science. She completed practica, internship and an NIH-funded postdoctoral fellowship at the University of Chicago, the University of Wisconsin, the University of Florida and Vanderbilt University, and has more than 20 years of experience in psychological assessment and evidence-based treatment.
References
1. National Center for PTSD (Sloan DM, Marx BP). Written Exposure Therapy for PTSD. US Department of Veterans Affairs. Updated 2026. https://www.ptsd.va.gov/professional/treat/txessentials/written_exposure_therapy.asp
2. Sloan DM, Marx BP, Lee DJ, Resick PA. A brief exposure-based treatment vs cognitive processing therapy for posttraumatic stress disorder: a randomized noninferiority clinical trial. JAMA Psychiatry. 2018;75(3):233-239. https://doi.org/10.1001/jamapsychiatry.2017.4249
3. Sloan DM, Marx BP, Resick PA, Young-McCaughan S, Dondanville KA, Straud CL, et al. Effect of written exposure therapy vs cognitive processing therapy on increasing treatment efficiency among military service members with posttraumatic stress disorder: a randomized noninferiority trial. JAMA Netw Open. 2022;5(1):e2140911. https://doi.org/10.1001/jamanetworkopen.2021.40911
4. Sloan DM, Marx BP, Acierno R, Messina M, Muzzy W, Gallagher MW, et al. Written exposure therapy vs prolonged exposure therapy in the treatment of posttraumatic stress disorder: a randomized clinical trial. JAMA Psychiatry. 2023;80(11):1093-1100. https://doi.org/10.1001/jamapsychiatry.2023.2810
5. Thompson-Hollands J, Marx BP, Lee DJ, Resick PA, Sloan DM. Long-term treatment gains of a brief exposure-based treatment for PTSD. Depress Anxiety. 2018;35(10):985-991. https://doi.org/10.1002/da.22825
6. Schnurr PP, Hamblen JL, Wolf J, Coller R, Collie C, Fuller MA, et al. 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. Ann Intern Med. 2024;177(3):363-374. https://doi.org/10.7326/M23-2757
7. American Psychological Association. Clinical Practice Guideline for the Treatment of Posttraumatic Stress Disorder (PTSD) in Adults: Treatments. 2025. https://www.apa.org/ptsd-guideline/treatments
8. DeJesus CR, Trendel SL, Sloan DM. A systematic review of written exposure therapy for the treatment of posttraumatic stress symptoms. Psychol Trauma. 2024;16(Suppl 3):S620-S626. https://doi.org/10.1037/tra0001659
9. Fortney JC, Kaysen DL, Engel CC, Cerimele JM, Nolan JP Jr, Chase E, et al. Pragmatic comparative effectiveness of primary care treatments for posttraumatic stress disorder: a randomized clinical trial. JAMA Psychiatry. 2025;82(12):1203-1215. https://doi.org/10.1001/jamapsychiatry.2025.2962
10. Sloan DM, Marx BP, Bovin MJ, Feinstein BA, Gallagher MW. Written exposure as an intervention for PTSD: a randomized clinical trial with motor vehicle accident survivors. Behav Res Ther. 2012;50(10):627-635. https://doi.org/10.1016/j.brat.2012.07.001
Disclaimer
This article is for informational and educational purposes only and is not a substitute for professional medical or mental health advice, diagnosis or treatment. Reading it does not create a clinician-patient relationship. If you are in crisis or having thoughts of suicide, call or text 988, or call 911 in an emergency.