A version number implies a finished, better release. Sort standard EMDR, EMDR 2.0, the Flash Technique, and Brainspotting by what the research has actually established, and “newer” stops standing in for “better.”

A consultee asked me recently whether she should be reaching for EMDR 2.0 with her PTSD caseload, not whether it might help, but whether she was now behind for not using it. The question is reasonable and increasingly common, and it rests on an intuition worth examining: that a higher number means a better tool. Call something “2.0” and you have made that promise in the reader’s head before the sentence ends. Software 2.0 fixed the bugs and runs faster, so EMDR 2.0 sounds like the release that supersedes what came before.

It is a poor mental model for a research literature, and there is a cleaner one available. Stop picturing these as versions of one product. Sort them instead by how much the evidence has established, and the names fall into an order that has nothing to do with their numbering: a well-supported standard, a method still in trials, one with early findings, and a related approach that needs evaluating on its own terms.

Standard EMDR is the established rung: an eight-phase therapy for PTSD organized around the Adaptive Information Processing model, with a substantial evidence base behind it. The error is to read “established” as “old version,” the outdated release the newer names have moved past. It is the baseline those methods are still being measured against. That is a different status, and a stronger one.

EMDR 2.0 sits at a different point on the development path, and the accurate word for where it sits is in testing. It is a set of proposed modifications developed within the EMDR tradition, leaning heavily on taxing working memory during processing; in the field you will hear it called an evolution, intensive, efficient. Those are the framing words of developers and trainers describing an idea being refined. The research underway is the right kind for that stage: ENHANCE, a registered randomized trial, compares standard EMDR, EMDR 2.0, and the Flash Technique for PTSD across effectiveness, efficiency, acceptability, and moderators including PTSD severity, depression, and dissociation. But a protocol is the front end of research, not an outcomes paper. EMDR 2.0 is not yet shown to outperform standard EMDR; what exists is a well-designed question: whether these modifications help, and for whom.

The Flash Technique sits a rung above that, with emerging evidence and genuine clinical enthusiasm. A randomized trial in traffic-accident survivors reported improvement on several traumatic-stress and anxiety measures at one month, though not every outcome moved and the sample and setting were narrow. One institutional marker locates it usefully: EMDRIA’s training listing treats Flash as a deviation from the EMDRIA definition of EMDR for credit purposes. Flash is therefore not “EMDR, faster,” and EMDR 2.0 is not a Flash-style upgrade to EMDR either.

Brainspotting belongs on a different shelf, because it is not a version of EMDR at all, though a consultee asked me about it just last week, in the usual form: is it gentler, deeper, less likely to leave the client wrung out afterward? The comparison literature is early. One study set EMDR, Brainspotting, and a body-scan condition against one another in a small non-clinical sample of clinicians, single sessions, a distressing memory. That is an early signal about related approaches. It is not evidence that Brainspotting matches EMDR therapy for PTSD, and it is no basis for calling Brainspotting gentler or safer. It earns its place on its own evidence, not by proximity to EMDR’s.

What sorts this ladder is outcome trials, not mechanism theory, a distinction easy to lose, because a good account of why something works can stand in convincingly for proof that it does. The leading mechanism account centers on working memory: holding a distressing memory in mind during a demanding dual task appears to reduce its vividness and emotional charge, a dual-task effect a 2022 review supports. That is a real line of research and a useful one. It is also a narrower claim than it can sound: a finding about vividness and emotionality under working-memory load, not a settled neuroscience of how an entire therapy produces durable change, and different again from the AIP framework EMDR uses to organize the work. Mechanism, outcome, and organizing model answer three separate questions. A compelling mechanism story can make a method feel finished long before its trials have earned it the rung.

Which leaves a modest, defensible set of conclusions. The field is actively testing refinements and adjacent methods, a sign of a living treatment area, not a troubled one. Each of these names sits at an identifiable and different stage of evidence. And a version number is a marketing-shaped intuition rather than a position on the ladder. The trials, ENHANCE among them, will report, and the responsible thing is to say what they show when they show it.

Sources

• ENHANCE randomized trial protocol comparing standard EMDR, EMDR 2.0, and the Flash Technique for PTSD.
• Flash Technique randomized trial in traffic-accident survivors.
• Review of working-memory and dual-task findings related to vividness and emotionality.
• Comparison of EMDR, Brainspotting, and body scan in a small non-clinical sample.
• EMDRIA Flash Technique training listing.