ART vs prolonged exposure (PE): how they differ, and which has the stronger evidence

Prolonged exposure (PE) is one of the best-studied treatments for PTSD and is rated “Strong for” in the 2023 VA/DoD guideline and first-line in the APA’s 2025 guideline. Accelerated Resolution Therapy (ART) is a newer approach that the VA/DoD guideline rates as having insufficient evidence to recommend for or against. The biggest practical difference is how you face the memory: in PE you recount it aloud, again and again, over several weeks; in ART you recall it briefly, often silently, and then replace the distressing images.

I am trained in ART and EMDR, not in PE. If PE sounds like the right fit after reading this, you would need a clinician trained in it, and I’m glad to talk about how to look for one.

What prolonged exposure involves

PE was developed by Edna Foa, and its first randomized trial was published in 1991. The VA describes three parts:

• Learning about trauma reactions (psychoeducation).
• Imaginal exposure: revisiting and recounting the trauma memory in your imagination, aloud, in session. The VA’s patient guide says that from around the third session “you will start talking in detail about your trauma each session.”
• In vivo exposure: gradually and repeatedly approaching situations, people or places you have been avoiding because they remind you of the trauma.

Sessions are usually recorded, and between sessions you listen to the recordings and practice the real-life exposures. The VA describes a course of 8 to 15 weekly sessions of 60 to 90 minutes.

The idea is that avoidance keeps fear going. By staying with the memory, and with the places you have been steering around, long enough and often enough, the fear loosens its grip.

What ART involves

ART was developed in 2008 by Laney Rosenzweig, a licensed marriage and family therapist. It also includes exposure, but a much shorter kind. In the published protocol, you bring the scene to mind for a short period (the researchers describe about 30 to 45 seconds), “verbally or non-verbally,” while following sets of about 40 side-to-side eye movements. Further sets are used to settle the physical sensations the memory stirs up.

Then comes the step PE doesn’t have: Voluntary Image Replacement. You replace the distressing images with a scene of your choosing. You still know what happened; the researchers note that knowledge of the original scene remains. There is no homework. See what happens in an ART session for the full sequence.

Side by side

The evidence, plainly

PE’s research base is far larger and longer-standing. The VA’s professional guide says PE is “recommended as a first-line treatment in all major PTSD treatment guidelines.” It reports that on average 53% of people who start PE no longer meet criteria for PTSD, rising to 68% among those who complete it. In Foa’s original 1991 trial with 45 rape survivors, which also tested stress inoculation training, supportive counseling and a waitlist, PE produced the best outcome on PTSD symptoms at follow-up.

ART’s evidence is early. The only randomized trial of ART for PTSD (Kip and colleagues, 2013) enrolled 57 service members and veterans and compared ART with a non-therapy attention control, not with PE or any other treatment. Symptoms fell significantly more with ART, but outcomes were self-reported, the sample was small, and ART’s developer was a co-author. A 2024 systematic review, by authors not trained in ART, found five studies, could not run a meta-analysis, and concluded ART “shows some promise” but “more high-quality studies are needed.”

No trial has compared ART with PE. So nobody can honestly tell you that ART works as well as PE, or better, or faster. What can be said is that PE has been tested far more thoroughly.

When PE may be the better choice

• You want the treatment with the strongest, most replicated evidence for PTSD.
• Avoidance has taken over a lot of your life (roads you won’t drive, places you won’t go), since PE works on this directly through real-life exposure.
• You are comfortable, or willing to become comfortable, telling the story aloud and doing practice between sessions.
• You have access to a clinician trained in PE.

When ART may be worth considering

• The thought of recounting the details aloud is what keeps you from starting any treatment.
• You can’t realistically fit homework into your week.
• You tried PE and stopped, or it stalled, and you want something with a different procedure.
• You understand ART’s evidence is thinner and are choosing it with that in mind.

On that third point, one uncontrolled study (Pang and colleagues, 2023) followed 148 veterans who received ART, including 33 who had previously had CPT or PE. Among those who completed ART, the share whose symptoms improved meaningfully was similar whether or not they had been treated before. There was no comparison group, only completers were counted, and the research team was connected to ART, so this is a reason to consider ART after PE, not evidence that it will work.

Choosing between them

If PE is available to you and you are willing to do it, it is a strong place to start. If the retelling or the homework is the reason you keep not starting, a therapy you will actually attend has real value. Either way, a good clinician should be able to explain why they are suggesting one over the other. The full comparison table puts PE alongside the other options, and if you want to talk through whether ART fits your situation, you can get started here.