First published May 2, 2020.
No, your attention span is not shorter than a goldfish's. The claim that humans now focus for only eight seconds, down from twelve in 2000, while goldfish manage nine, comes from a 2015 marketing report by Microsoft Canada. The numbers in it were not measured by Microsoft. They were borrowed from a statistics website that has never shown where they came from, and attention researchers say the comparison has no scientific basis. Goldfish, for their part, can remember things for months.
The myth is worth unpacking, though, because the worry behind it is real. Phones and constant notifications do pull at our focus. The useful question is not how many seconds we last, but how interruptions affect the things we actually care about doing.
Where the eight-second figure came from
In spring 2015 Microsoft Canada's consumer insights team published a report on attention for advertisers. It surveyed about 2,000 Canadians and recorded brain activity with EEG headsets in 112 volunteers while they did various tasks. Its aim was to help brands understand how people engage with content across screens.
The famous line about goldfish appeared on a page of background statistics. It said the average human attention span had dropped from 12 seconds in 2000 to 8 seconds in 2013, and that a goldfish's was 9 seconds. The source given was Statistic Brain, a website that publishes figures on all kinds of topics.
When journalists at the BBC and the Wall Street Journal tried to trace those numbers in 2017, they hit a wall. Statistic Brain listed the US National Library of Medicine and the Associated Press as its sources, but a researcher at the library found no such study, and the AP could not find an article containing the figures. The website did not answer requests to explain them. In other words, the most-quoted statistic about modern attention appears to have no traceable origin.
Media outlets around the world still ran headlines saying Microsoft had proved we are dumber than fish. The report's own EEG work was more nuanced, and it did not include any goldfish.
What attention researchers actually say
Scientists who study attention for a living were blunt. Edward Vogel, a psychology professor at the University of Chicago who had measured students' attention for about twenty years, said he found it remarkably stable across decades. Michael Posner, one of the pioneers who mapped the brain networks behind attention, said he saw no evidence of change since the topic was first studied in the late 1800s. The neurologist Marcus Raichle agreed that healthy adults' attention had not declined.
Dr Gemma Briggs, a psychologist at the Open University in the UK, made a deeper point: an "average attention span" is not a meaningful number at all. How long you can concentrate depends entirely on the task, how interested you are, how tired you are and what else is going on. A person who drifts from a dull form after a few seconds may follow a gripping film or a chess game for hours.
That is why there is no single test that could produce a figure like eight seconds for everyone. Psychologists measure specific things instead, such as sustained attention during a monotonous task, how quickly people notice a change, or how much information they can hold in working memory. Each has different results and different limits.
The goldfish deserves an apology
The other half of the comparison is just as shaky. The idea that goldfish have a three-second memory is an old piece of folklore. In reality, goldfish are a standard animal in memory research, with studies going back to at least 1908. They can learn to tell apart shapes, colours and sounds and remember them for at least three months.
In one well-known experiment at the University of Plymouth in 1994, goldfish learned to press a lever to get food. When the lever only worked during one hour each day, they learned to press it at the right time. The television show MythBusters trained goldfish to swim through a simple maze and found they still remembered the route more than a month later. Anyone who has kept fish will also know they gather at the front of the tank around feeding time.
So the comparison fails at both ends: there is no verified 8-second human figure and no verified 9-second goldfish figure to compare it with.
Why the myth spread so easily
The goldfish line had everything a viral statistic needs. It was short, precise, a little insulting and it confirmed what many people already felt about smartphones. It also suited the marketing world very well. If audiences can only focus for eight seconds, then shorter ads, punchier content and more frequent messages look like the answer, which is exactly what agencies were selling.
Researchers studying film have made a related point. Shots in movies have become shorter over the decades, which is sometimes cited as proof that viewers cannot concentrate. The researchers argue the opposite: editors have simply become better at holding attention with quick cuts, and audiences follow complex stories for two hours or more.
Repetition did the rest. Once the figure appeared in news stories, conference slides and books, it started to look authoritative simply because it was everywhere.
What screens really do to focus
Dropping the goldfish does not mean technology has no effect. Studies have linked very early and heavy television exposure in children to later attention problems, and a 2024 study connected heavy use of short-form video among students with shorter attention and weaker grades. These are correlations, not proof of cause, but they deserve to be taken seriously.
What researchers describe is less a shrinking brain capacity than a change in habits. Notifications, endless feeds and multiple open tabs train us to switch tasks often. Switching has a cost: each time we return to a task, it takes time to rebuild our train of thought, and errors creep in. The Microsoft report itself suggested people were getting better at filtering information quickly while finding sustained focus harder, which matches what many of us notice in daily life.
Tiredness, hunger, noise, stress and plain boredom also shorten the time we stay on task, and they often have more to do with a bad day of concentration than any long-term decline. If problems with focus are severe or new, a doctor is the right person to talk to.
Practical ways to protect your attention
Since attention depends on conditions, the most effective changes are about conditions rather than willpower:
- Turn off non-essential notifications and keep the phone out of sight during work that needs thought.
- Work in blocks of focused time with planned breaks, rather than checking messages whenever the urge strikes.
- Do one thing at a time where it matters. Watching television while scrolling and planning tomorrow means none of the three gets your best.
- Choose demanding tasks for the time of day when you are most alert, and protect sleep, which affects concentration more than most apps do.
- Practise sustained attention deliberately, for example with puzzles that test focus, long-form reading or a hobby that absorbs you. A balanced diet helps too; here are some foods often linked with concentration.
Your brain is not a goldfish bowl, and it is not broken. It is simply responding to the environment we have built around it, and that environment is something we can change.
Sources: Microsoft Canada, Attention Spans (2015); Wall Street Journal (17 February 2017) and BBC World Service, "Busting the attention span myth" (10 March 2017), reprinted by the University of Wisconsin; Wikipedia: Goldfish; Wikipedia: Attention span.
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