Psychomotor Vigilance Task — Anyone Is Fast For Ten Seconds
The Psychomotor Vigilance Task is the measure sleep researchers reach for first, and it is almost insultingly simple: a timer appears at a random moment, you stop it, and that repeats. What makes it informative is not your quickest response but the ones where you did not keep up — those become more frequent long before you feel any different. Play it online for free, no download and no sign-up required to start.
Not a diagnostic tool. The three-minute version here follows PVT-B, the short form used in research; the six-minute option is our own extension. Either way this is a practice and self-tracking exercise, not a validated instrument: it is not normed, it cannot screen for a sleep disorder, and it cannot tell you how much sleep you are missing or whether you are fit to drive or work. What it measures is how quickly and how consistently you responded, right now.
A quiet round of Psychomotor Vigilance Task — 3 min. When you start, everything else fades — just you and the task.
No sign-up needed. Press Esc to exit anytime.
Tip
The gaps are random on purpose. The wait before each counter is drawn fresh every time, so there is no beat to settle into and nothing to anticipate. Pressing before the counter shows up is recorded as a false start and costs you score — guessing the timing is the one strategy this task is built to catch.
Go Pro — train without limits
- ·Unlimited sessions
- ·Every difficulty level
- ·Full growth history
- ·Ad-free training
How to play
- Watch the empty panel and wait.
- A counter appears at a random moment and starts running.
- Press space, or tap the panel, to stop it as fast as you can.
- The gap before the next one is random, so there is no rhythm to ride.
Psychomotor Vigilance Task tips
Ways to play it better — each one comes from how this version actually scores, not from general advice about concentration.
The gaps are random on purpose
The wait before each counter is drawn fresh every time, so there is no beat to settle into and nothing to anticipate. Pressing before the counter shows up is recorded as a false start and costs you score — guessing the timing is the one strategy this task is built to catch.
Your slowest responses carry the signal
The score leans on a kind of average that a single very slow response drags down and a single very fast one barely lifts. That is deliberate: dropping from your usual pace for one moment is the thing worth knowing about, and chasing a personal-best single response will not move the number much.
Three minutes is long enough to fall off
On 3 min the interesting part is not the opening. Almost everyone is quick for the first stretch; what varies between people, and between one day and another for the same person, is how well that holds together by the end.
One caveat worth knowing: a change of strategy moves your score for reasons that have nothing to do with attention. Your dashboard reads each session against your own recent ones, so if you adopt something from this list, give it a few sessions before reading anything into the trend.
Frequently asked questions
How is this different from a plain reaction time test?+
The trial itself is the same idea, but the point is the duration. A reaction time test asks for your quickest response over a handful of tries; this one runs for minutes and reports the responses where you fell behind. Anyone is fast for ten seconds.
Can this tell me how sleep-deprived I am?+
No. Responding more slowly and less evenly is associated with being short on sleep in research settings, but a single session on a website cannot separate that from caffeine, time of day, your keyboard, or simply not caring much on this particular attempt. It reports how you responded, not why.
Is this the same length as the version in research papers?+
The three-minute option follows PVT-B, a short form used in published work, including its one-to-four-second gaps. The standard version runs ten minutes with longer gaps, and the six-minute option here is our own middle ground. None of it is normed against a population, so treat the number as a comparison with your own earlier sessions.
What counts as falling behind?+
Research on the short form treats a response slower than about a third of a second as a lapse, and that is the line used here. It sounds harsh until you play it — most responses land well inside it, which is exactly why the ones that do not stand out.
Where this fits
- Attention Span Test — The closest thing here to 'span' in the everyday sense, because duration is the whole variable: the task is trivial and it runs for minutes, so what it reports is not how fast you can be but how long that lasts. Anyone is fast for ten seconds.
Try another challenge
Schulte Table
Scan a scrambled number grid as fast as you can, in order. Trains visual search speed and peripheral vision.
Stroop Test
Name the ink color, not the word. Trains selective attention and mental control.
Visual Search
Find the one target hidden among distractors. Trains scanning speed and sustained attention.
Multiple Object Tracking
Keep several identical moving dots in mind at once. Trains divided and sustained visual attention.
Simon Effect Test
Answer by colour, ignore which side it appeared on. Trains response conflict and inhibitory control.
Flanker Test
Read the middle arrow, ignore the four crowding it. Trains selective attention and interference control.
Go/No-Go Task
Tap for circles. Hold still for squares — that's the hard part. Trains inhibitory control and impulse braking.
Sustained Attention to Response Task
Tap every digit, hold still for one. Ten minutes of focus in two. Trains sustained attention and mind-wandering resistance.
Mackworth Clock Test
A hand ticks round a blank dial. Catch the moment it skips. Trains vigilance and rare-event detection over time.
Cancellation Task
Sweep a dense field and cross out every target. Trains visual scanning and selective attention.
Trail Making Test
Connect the sequence — Part B alternates numbers and letters. Trains processing speed and attention switching.
Change Blindness Test
Two versions flicker back and forth — spot what changed. Trains attention allocation across a scene.