You come back from a break, look at your screen, and for a few seconds nothing happens. Then something catches your eye, a highlighted line or a familiar thumbnail, and the whole task comes flooding back. Researchers have a pretty good account of why, and it comes with some wonderfully practical tricks.
The blank moment after a break
Most of us know the feeling. You were deep in something, you stepped away for a coffee, and now you're back in front of the same screen with no idea what you were about to do. The work is right there. Your intention isn't.
Psychologists who study interruptions call the delay before you start working again the resumption lag. It can be a few seconds or much longer. One of the most useful findings in that research is about what shortens it: cues. And not just any cues. The right kind.
(If you'd like the bigger picture of the whole trip back, from finding the window to deciding what's next, we covered it in the hidden cost of getting back.)
Goals fade, cues bring them back
In 2002, Erik Altmann (Michigan State University) and Greg Trafton (U.S. Naval Research Laboratory) published a model called memory for goals, and tested it against data from the Tower of Hanoi, a classic puzzle that's all about setting goals aside and coming back to them. Its core idea is that an intention, like "finish this paragraph" or "fix this layer mask", sits in memory like anything else. While you're working on it, it's strong. Once you set it aside, it starts to fade, and newer intentions crowd in on top of it. The authors even describe the leftovers of old goals as a kind of mental clutter.
To bring a faded goal back, the model says you need a cue: something in your mind or your surroundings that's linked to it. Three details matter for everyday work:
- The link forms before you leave. A cue works best when it was in front of you while you were working on the goal, so the two became connected.
- Specific cues work better. A cue tied to one goal brings that goal back. A cue tied to many things, like a screen of identical windows, is much weaker.
- Obvious cues work better. A cue you might not even notice can't do much for you.
Think of the old trick of tying a string around your finger. It only works if you tied it while thinking about the thing, and only if that string means one thing. A finger covered in strings reminds you of nothing!
Loud beats subtle
If cues help, does any cue do? A 2005 experiment by Trafton, Altmann and Derek Brock, Huh, what was I doing?, tested exactly that. After an interruption, some participants saw a large red arrow pointing to their last action. Some saw a subtle cue: a cursor sitting where their last action had been. Some saw nothing at all.
The people with the red arrow resumed faster. The subtle cursor was no better than no cue at all. Really!
A later review of interruption research by Trafton and Christopher Monk turned findings like this into plain advice:
- Highlight the next thing you want to do when you come back.
- Make your next action one on something you can see.
- When you get interrupted, take a moment to work out what you'll do next before you switch.
That last tip connects to another finding the review describes: when people had a chance to prepare before an interruption, they more often rehearsed what they were about to do than what they had just done, and that preparation helped them resume.
The review adds an honest caveat, too. In the arrow experiment, the cues helped most early on and much less later, as people got more experienced. Cues are a boost, not magic.
The lesson is still a little humbling. The quiet reminders we leave ourselves, a cursor blinking in a document or a tab left open somewhere, may be too faint to do their job.
Your eyes remember where things were
There's a second kind of cue you carry without even trying: location. In a 2008 eye-tracking study, Spatial memory guides task resumption, Raj Ratwani (George Mason University) and Greg Trafton (U.S. Naval Research Laboratory) found that after an interruption, people's eyes went back remarkably close to where they had left off rather than starting over. In a second experiment, an interrupting task that itself used spatial attention disrupted resumption more than one that didn't.
These were small lab studies with simple tasks (the main one was picking the odd numbers out of a column and typing them in), so treat them as a hint rather than a guarantee. But the hint matches everyday experience: you remember that the brief was on the left and the design file was on the right. When windows keep their places, that memory is a free cue. When everything gets shuffled, it's gone.
Build a cue kit
Here's a quick swap chart for turning weak cues into strong ones:
| Weak cue | Stronger swap |
|---|---|
| A blinking cursor somewhere in a long document | A highlighted line, or a marker like RESUME HERE |
| "It's in one of those tabs" | Its own window, named for the task |
| Five windows that all look the same | Distinct Safari profile colors, Finder tags and clear file names |
| Desktops that reshuffle themselves | Spaces that stay where you put them |
| A minimized window in the Dock | A window left in view, or a hidden app you can bring straight back |
Make the cue loud
Before you step away, highlight the line you were editing, type a marker like RESUME HERE, or put a bright sticky note right on the window. Obvious beats elegant.
Make it point to one thing
Name windows and files so each one clearly belongs to one task. Distinct Safari profile colors and Finder tags help too. The more a cue is shared between tasks, the less it can bring back any one of them.
Set it before you leave
Take a few seconds at the moment of interruption, while the goal is still fresh. That's when the link between cue and goal forms. A cue you add later, once the thought has faded, has much less to hold on to.
Let windows keep their places
Consider turning off "Automatically rearrange Spaces based on most recent use" in System Settings > Desktop & Dock, so your desktops stay where you put them. Your spatial memory will thank you.
Keep the work visible
A minimized or buried window can't cue anything. See why we stopped minimizing for friendlier ways to clear the screen.
Try it: the red-arrow habit
Here's a small experiment for your next week of work. Every time you're interrupted or step away:
- Pause before you switch. Take a breath and ask, "What was I about to do?"
- Make your own red arrow. Highlight the spot, drop a marker, or type the next step right where you'll see it.
- Point it at one thing. Write the next action, not the whole project: "Next: crop the hero photo" rather than "Website".
- Leave it where your eyes expect it. Don't move or minimize the window on your way out.
- Come back to the cue first. Look for your arrow before you look at anything else.
At the end of the week, check in with yourself. Do those blank moments after a break feel shorter? Keep what works and drop what doesn't.
Where a visual switcher fits
A picture of the actual window is about as specific a cue as you can get. It shows the page you were on, the canvas you were in, the paragraph you were writing. That's the idea behind Canopy: hold ⌥ Tab and every window from the apps in its roster appears as a live preview, labeled with its page title, file name or folder, most recently used first. Safari profiles show up as colored badges, so Work and Personal are easy to tell apart.
And because Canopy never moves or resizes your windows, the places your eyes remember stay put. The picture helps you find the window, and the window's familiar spot helps you find your place in it. Nice teamwork!
When cues aren't enough
Cues are brilliant at one job: helping you get back. They won't make an interruption free, and they can't replace protecting your focus in the first place. If the same alert keeps dragging you away, fixing the alert beats building a better way back.
Cues can also get overloaded. If every window has a bright sticky note and every document has three RESUME HERE markers, nothing stands out anymore. Keep one loud cue per task, and clear the old ones away once you're back on track.
Whatever tools you use, the research points the same way. Don't count on remembering. Leave yourself something you'll see.
Quick answers
What's resumption lag?
It's the pause between the end of an interruption and your first real action back on the task. Researchers use it as one way to measure how disruptive an interruption was.
Do subtle cues help at all?
In the Trafton, Altmann and Brock experiment, a subtle cursor cue did no better than no cue. That doesn't prove small cues are useless everywhere, but if you're choosing, go bold.
Does a window switcher replace notes to myself?
Nope! They do different jobs. A switcher helps you find the right window fast. A note tells you what to do once you're there. Together they cover both halves of getting back.
