Attention Span: Is It Really Shrinking? What the Research Says

You sit down to read something that matters, and by the second paragraph your hand is already on your phone. It's easy to conclude that your attention span is broken, or that everyone's is.

The research tells a more useful story. The famous claim that people now have an eight-second attention span, shorter than a goldfish's, has no study behind it. What has changed is how often we switch and how much is competing for each moment. Attention responds to its surroundings, which means you can change it.

What "attention span" actually means

Attention span sounds like a single number, like your height. It isn't. Psychologists split attention into several abilities: keeping it on one thing over time (sustained attention), picking out what matters while ignoring the rest, and switching between tasks. How long you can hold any of them depends on what you're doing, how tired you are and how much you care. As one psychologist told the BBC, it's "very much task-dependent" ^[1]. The same person who can't get through two pages of a report can play a video game for three hours.

What most people mean by a short attention span is two things: how long they stay with one task before switching, and how easily something pulls them away. Both can be measured, and both respond to your surroundings.

The goldfish myth

The claim traces back to a 2015 consumer insights report from Microsoft Canada, which put the average human attention span at 8 seconds, one second shorter than a goldfish's 9 ^{[1, 2]}. It was repeated everywhere.

It doesn't hold up. The figure wasn't from Microsoft's own research: the report credited it to a website called Statistic Brain, and when the BBC contacted the sources that website listed, neither could find any research behind the numbers ^[1]. A review in Advances in Physiology Education added that no one knows how to measure a goldfish's attention span in the first place, that goldfish memory is actually quite good, and that the human eight seconds described the average time someone spends on a web page before looking somewhere else ^[2].

The same review took apart another favorite claim, that students stop paying attention 10 to 15 minutes into a lecture. It rests largely on a 1978 study that was really about note taking ^[2].

What is the average attention span?

There's no honest single number, because attention depends on the task. What researchers can measure is how well people sustain attention on a demanding test, and how long they actually stay on one thing.

Ability changes with age. One of the largest studies of sustained attention tested 10,430 people online. Their ability peaked in the early 40s and then declined gradually in older adults ^[3]. In other words, the average adult attention span typically keeps improving through your twenties and thirties.

Behavior is another story. In a 2016 study, the researcher Gloria Mark and her colleagues logged the computer activity of 40 office workers at a large tech company for about 12 working days. On average, they stayed on one screen for 47 seconds before switching to another; the median was 40 seconds ^[4]. That's not how long they could pay attention. It's how long they did.

Is attention span shrinking?

Two different things get called attention span, and the answer is different for each.

Our collective attention does move faster. Researchers who studied decades of data across several domains found that topics now rise and fall more quickly. A hashtag that reached Twitter's global top 50 in 2013 stayed there for 17.5 hours on average; in 2016, for 11.9 hours ^[5]. Their model points to the sheer amount of content: the more is produced and consumed, the faster our limited shared attention runs out on each topic ^[5].

Your capacity to focus is another matter. There's no evidence that the human attention span itself is shrinking ^[1]. What has changed is the environment around it: more content competing for the same attention, and a device in your pocket designed to interrupt.

What your phone does to your attention

Notifications cost you even when you ignore them

In an experiment, people worked on a task that demanded steady attention. Simply receiving call and text notifications, without touching the phone, hurt their performance, and the effect was comparable in size to what has been seen when people actually use a phone for calls or texts ^[6].

Short videos go with weaker focus

A 2025 meta-analysis pooled 71 studies with 98,299 people. Heavier use of short-form video, the TikTok, Reels and Shorts kind, went with poorer attention and poorer inhibitory control, the ability to stop yourself from acting on an impulse; both were moderate links ^[7]. Most of the studies were snapshots, so they can't show that the videos caused the problem, and people who already struggle to focus may be drawn to them. But a feed built to hand you something new every few seconds is a strange way to train a mind for a forty-minute task.

Attention isn't a tank running dry. It's a skill that takes the shape of your days.

How to get your attention span back

The most encouraging evidence comes from a randomized trial with 467 adults. Those who blocked all mobile internet on their phones for two weeks, with calls and texts still working, improved on an objective test of sustained attention, by about as much as attention typically declines over 10 years of aging ^[8]. They also reported better mental health and well-being, and part of the gain came from how they spent the time instead: with people in person, exercising and outdoors ^[8].

You don't need to give up mobile internet to use that. These changes follow the same logic:

1. Batch your notifications. In a two-week experiment with 237 people, those whose notifications arrived in three batches a day felt more attentive, in a better mood and more in control of their phones than people who got them as usual, and they were less stressed. People who got no notifications at all gained less and felt more anxious about missing out ^[9]. On an iPhone, Scheduled Summary (Settings, then Notifications) bundles the apps you choose into the times you set; leave out the apps that bring you messages from people.
2. Put the phone in another room while you work. You may have read that a phone on the desk drains your brainpower just by being there. That's the "brain drain" idea from a widely shared 2017 study, and the evidence since is weaker: a 2024 meta-analysis of 56 studies with 7,093 people found only one reliable effect, a small drop in working memory, and none for the other abilities tested ^[10]. Distance still helps, mostly because it turns an automatic reach into a decision you have to get up for.
3. Work in single-task blocks. Pick one task, set a timer for 25 to 50 minutes, close everything else, and stretch the blocks as they get easier.
4. Read something long every day. Ten pages of a book or one long article. It's the practice the feed never gives you.
5. Put an end on the feed. Short-video apps have no last page, so give them one: a session limit or a daily cap. Here's how to lock apps on iPhone with the tools already on your phone.
6. Protect your sleep. Focus is harder after a short night, and a late scroll is the usual thief. Our guide to revenge bedtime procrastination covers the last hour of the day.

When willpower is what runs out, let structure do the work. In Unrotten, the + button on Home starts a phone-free session (Work, Focus or Reading): the apps you chose stay locked until it ends, with a countdown on your Lock Screen and in the Dynamic Island. The Focus on what matters goal protects a window of every day from those apps, and Shorter scroll sessions puts a break on a scroll that runs too long.

Your attention isn't broken

Your attention span hasn't shrunk to a goldfish's. It's being asked to do something it was never built for: ignore a device designed to interrupt it, all day long. Change the surroundings and attention tends to follow. Start with one change this week, such as an hour of work each morning with your phone in another room, or a Focus session in Unrotten, and notice how long you can stay with one thing. For the scroll that eats the rest of the day, read how to stop doomscrolling.