The Mental Rehearsal Trick That Actually Helps ADHD Memory
A few months back, this blog made the case that your future self doesn't need a better memory — it needs the object itself sitting in its path. Leave the bill on the keyboard, not in a drawer, and you don't have to remember it exists. That fix works great right up until it doesn't: you can't leave "call the dentist back" on your keyboard. You can't make a text you owe someone physically visible. A whole category of your intentions has no object to place anywhere.
So what do you do with the stuff you can't put in sight?
The internet's answer has been around for years: picture yourself doing it. Vividly imagine the moment, and your brain supposedly treats it like a rehearsal, which makes the real thing easier to pull off later. It's common advice in ADHD coaching content specifically, usually framed as a workaround built for exactly this brain. Two 2026 studies just tested that claim directly, and the honest answer is more interesting than the advice.
The popular version doesn't know you have ADHD
The first study put 63 adults with ADHD and 64 without through a memory task where they formed everyday intentions — the kind of small promise you make to yourself and then have to actually keep. Half the group used standard memory encoding, half used episodic future thinking: picturing themselves carrying out the intention at the moment they formed it (Altgassen, Heinrich & Edel, 2026, Journal of Attention Disorders).
Two things showed up. Controls remembered to follow through more than the ADHD group did — no surprise there. And picturing the future moment helped people execute their intentions better than standard encoding did, but it helped both groups by roughly the same amount. The gap between ADHD adults and everyone else didn't close. When the researchers controlled for verbal ability, the benefit of picturing it stopped being statistically significant at all.
Read that twice, because it matters: a technique marketed as an ADHD workaround turned out to be a generic memory booster that ADHD brains get no special advantage from, and part of whatever boost it gave may have really been a verbal-skill effect wearing a mental-imagery costume. If you've tried "just picture yourself doing it" and it didn't feel like it was built for you, that's not you doing it wrong. It wasn't built for you. It was built for everyone, badly labeled.
The version nobody was marketing
Here's where it gets useful. A second study, far larger — 196 adults, split evenly between ADHD and controls — tested a more specific question. Instead of one generic "picture yourself doing it" condition, researchers split the imagining into two distinct flavors. One group pictured the outcome: the task already done, the relief of it being handled. Another group pictured the process: the actual physical steps of doing it, in order, like watching their own hands move. A third group got standard encoding with no imagining at all. Everyone's follow-through got tracked across three separate check-ins over the following days (Stelz, Edel & Altgassen, 2026).
Across the whole sample, outcome-focused imagining won — picturing the task finished produced the strongest memory boost overall. But the researchers found something they weren't expecting: process-focused imagining, picturing the literal steps rather than the finish line, produced a real benefit specifically for the ADHD group. Not a bigger slice of a shared benefit — a distinct effect that showed up for ADHD adults and not, in the same way, for everyone else.
That's the first solid evidence of a mental-rehearsal technique that does something different for an ADHD brain instead of just scaling down the same generic effect. And it points at something concrete: when you form an intention you can't make visible, don't spend your five seconds of imagining on the payoff. Spend them on the mechanics.
What that looks like today
Say you need to call your dentist back tomorrow. The outcome-focused version is picturing the relief of having rescheduled — nice, but apparently not the lever for your brain specifically. The process-focused version is picturing the actual sequence: picking up your phone, opening the contacts app, finding the number, pressing call, saying your name when someone answers. Boring to imagine. That's the point — it's not inspiration, it's rehearsal.
It costs about ten seconds, and it slots in right at the moment you make the promise to yourself, not later when you're trying to remember you made it. That timing matters — this is an encoding strategy, not a recall strategy. It changes how the intention goes in, not how hard you try to dig it back out.
This doesn't replace the object-in-your-path fix from August. If you can make something visible, still make it visible — that remains the stronger, simpler lever whenever it's available. This is the patch for the gap that fix always had: the intentions with no object to place, the ones that live entirely in your head until the moment they're due. For those, the research now says something specific and testable, instead of a vague "picture success" platitude that turns out to work the same for everyone and nobody in particular.
Try it on one intangible thing today — a call, a reply, a favor you said you'd do. Walk through the steps in your head, not the ending. See if it's still sitting there when you need it.
References
- Altgassen, M., Heinrich, H., & Edel, M.-A. (2026). Episodic future thinking improves everyday prospective memory performance in adults with a previous diagnosis of ADHD. Journal of Attention Disorders. https://doi.org/10.1177/10870547261416467
- Stelz, S., Edel, M.-A., & Altgassen, M. (2026). The impact of process- versus outcome-focused episodic future thinking on everyday prospective memory in individuals with and without ADHD. Journal of Experimental Psychology: Applied. https://pubmed.ncbi.nlm.nih.gov/42475007/
This is general information, not medical advice. What helps varies person to person — talk to a qualified professional about decisions specific to you.