Watch two minutes of digits and catch every repeat
Watch a stream of digits and catch repeats. Compare your attention at the start and end.
120 digits, 18 repeats
2 min
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Results on screen · no email
About this test
Watch 120 digits at a steady pace and press when a digit repeats the one before it. There are 18 repeats, six in each third. Results compare repeats caught in the first and last thirds.
What this test reports
change from the first third to the last
repeats caught by third
response time by third
presses on non-repeats
How the task works
Digits appear one at a time, a little over a second each, for two minutes.
Press Space or tap the area only when a digit is the same as the one immediately before it.
Eighteen of the hundred and twenty digits are repeats, six in each third of the run, and no two of them are adjacent.
Almost every digit asks for nothing, which is what separates this from the go/no-go test in this hub, where almost every shape asks for a press.
The result is the change from your first third to your last, not a level: pressing along with the rhythm gets no figure at all.
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Use the result
What this test adds
The result compares repeat catches in the first and last thirds. Runs with too many presses on non-repeats do not produce a change figure.
A small next step
Run it once rested and once tired on the same device, and compare the two changes rather than the two counts.
Questions people ask
What does this measure, and how is it different from the go/no-go test here?
Their response structures are opposites: go/no-go asks for a press on almost every shape and for restraint on the rare one, while here almost every digit asks for nothing and the rare repeat is the single event that asks for a press. That makes this one about staying watchful while nothing is happening, which is what a vigilance task is for. The other route measures stopping yourself; this one measures still noticing.
Why does the result print a change rather than a score?
It compares repeats caught in the first third with repeats caught in the last third of your run. The result shows how your catches changed during this task.
Does catching fewer by the end mean I have ADHD or a short attention span?
No; this two-minute task cannot assess ADHD or diagnose attention difficulties, and sleep, caffeine, noise and other factors can affect a run.
Can I do well by pressing along with the rhythm?
No. Pressing on more than a quarter of the digits that were not repeats gets no figure at all, and the page names how many you pressed on and why the run cannot be read. Catching repeats by pressing constantly is not catching them.
Is a phone a fair device, and what should I do with the figure?
Yes. The digits are large and the rhythm is fixed. Compare runs on the same device, once rested and once tired, and look at the change between the first and last thirds.
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