How long does it take to refocus after a notification?

So, how long does it take to refocus after a notification? In the best recent test, a 2026 lab study, a single social media alert slowed people's thinking for about 7 seconds, and then they were back to normal. The widely repeated "23 minutes to refocus" figure measures something else: how long it takes to return to a task after you've been pulled away into other work. A glance you ignore costs seconds. An alert you act on can cost far more.

The more useful finding for everyday work is that the number of alerts people got, and how often they checked, predicted distraction better than their total screen time. And in a small student trial, silencing alerts cut long breaks by about a fifth. The 7-second study is doing the rounds again after GCN covered it on 29 October, so here is what it actually found.

How long does it take to refocus after a notification? About 7 seconds in the lab

Researchers in Lyon, publishing in Computers in Human Behavior, gave 180 university students a Stroop task, where you name the ink colour of a word that spells a different colour. It's tiring and leaves no room for drifting. While they worked, iPhone-style social media pop-ups appeared at random on the computer screen.

The students were split into three groups of 60. One group was told their own phone was mirrored to the screen. A second saw icons from their four most-used apps with no story attached. A third saw blurred shapes that couldn't be identified as any app.

Accuracy dipped too, for about 5 seconds, with no difference between groups. As GCN rightly points out, this is a temporary cost measured in a lab. Nobody's attention was damaged.

Alerts that look like your own messages pull hardest

The size of the slowdown depended on how personal the alert felt. Blurred shapes barely registered (an effect size of 0.11, only borderline significant). Familiar app icons had a small to moderate effect (0.31). Alerts people believed came from their own phone had the biggest effect (0.62), a bit above what researchers call medium.

In practice, a notification that looks like a real message for you grabs roughly twice as hard as a generic app icon. That's worth knowing, because many social app alerts (likes, "someone you follow posted") are designed to feel exactly that personal.

The number of alerts mattered more than hours of screen time

The researchers also collected three weeks of Screen Time data before the test. These students averaged nearly 7 hours a day on their phones, over 150 notifications and over 100 checks. That is a heavy-use group, so don't read those numbers as normal.

All three measures were linked to bigger disruptions. But alert volume and checking frequency predicted how distracted people got better than daily screen time did. Put simply, how often your phone interrupts you seems to matter more than how long you spend on it.

The authors suggest targeting how often and when interruptions happen, for example with alert-free periods. Speaking to PsyPost, the lead author said a few seconds matters because it repeats "dozens or hundreds of times per day." He also said the results shouldn't be read as a call to give up social media or notifications entirely. Anxiety levels didn't clearly predict who got more distracted.

Where the 23 minutes figure comes from, and why it gets misused

The "23 minutes" claim (sometimes "23 minutes 15 seconds") is usually credited to Gloria Mark, a researcher at UC Irvine. Many articles present it as the time needed to regain deep focus after one notification.

As far as I can tell, it comes from her workplace observation studies in the mid-2000s, which tracked how long office workers took to get back to an interrupted task, often after handling other tasks in between. I couldn't trace the exact original paper for this post, so hold the precise number loosely. The figure appears to be real. The way it gets attached to a single buzz is the problem.

To be fair to it, being pulled into a different task really can eat many minutes. Reply to one message, open a second thread, check a link, and twenty minutes go missing easily. A glance at the lock screen probably costs closer to the 7 seconds.

Silencing alerts cut long breaks by about 19% in one student test

A May 2026 preprint from Utah State University adds some real-world evidence. It hasn't been peer reviewed yet. Researchers synced phone logs with keystrokes for 22 students in an intro programming course, with 47 more as a comparison group, and counted a "break" as 5 or more minutes without typing.

The average hides a split. About two-thirds of students took fewer breaks, typically 50 to 60% fewer. About a third took slightly more, which the authors think could be separation anxiety or fear of missing out. Very few showed no change at all.

One big caveat: students chose when to switch suppression on, so the more motivated sessions may have been the silenced ones. It's one course and a small sample. Treat it as encouraging, not settled.

What to switch off at work, and what you can leave alone

1. 01
   Count your alerts for a few days

   Check Screen Time on iPhone or Digital Wellbeing on Android and note how many notifications arrive, since volume predicted distraction better than hours.

2. 02
   Cut social app alerts first

   Likes, new posts and suggested-content alerts feel personal enough to pull hard and are almost never urgent.

3. 03
   Silence everything during focus blocks

   Turn on Do Not Disturb or a Focus mode for the stretch you need to think, then check messages when it ends.

4. 04
   Run it as a one-week test

   Notice whether you take fewer long breaks, and adjust if going silent makes you more anxious.

5. 05
   Keep responses short when you do respond

   Go to the message, deal with it, and come back, because the long cost comes from drifting into something else.

The phone on your desk can stay there

You may have heard that a phone sitting nearby drains your brainpower. A 2024 meta-analysis by Hartanto and colleagues pooled 33 studies with 5,866 participants from 12 countries and found almost no effect from a phone simply being present, according to PsyPost's summary. Face up or down, silent or not, it didn't matter.

So the object isn't the issue. Buzzing and checking are. If checking is your bigger habit, I've written about how to stop checking your phone at work, and students may prefer a plan built around studying.

How much weight this research can carry

• The 7-second study used 180 heavy-using French students in a lab, with alerts shown on a computer screen and mostly rated as pleasant. Stressful messages weren't really tested.
• The Do Not Disturb evidence is one small preprint where students picked when to switch it on.
• Most of this research covers people aged 18 to 27, so applying it to office workers is a reasonable guess rather than a proven result.
• No study here shows lasting damage to attention. The costs are short and add up through repetition.