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Visible timer counting up. Stop it as close to 10.00 seconds as you can.
Press SPACE or click
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A timer counts up from 0.00s on screen. Stop it as close to 10.00s as you can. Five rounds. Your score is the average absolute deviation from 10s, in milliseconds — lower is better.
Click or SPACE
Mouse and touch input also work.
Metric
avg deviation (ms)
Difficulty
Easy
Use the same device and similar conditions when comparing runs. Your saved personal best and repeated results show your own trend; public leaderboard entries provide current competition context, not a population benchmark.
The absolute timing error between a visible 10.00-second target and your stop action.
A timer counts up from 0.00s on screen. Stop it as close to 10.00s as you can. Five rounds. Your score is the average absolute deviation from 10s, in milliseconds — lower is better.
Average deviation in milliseconds provides a task-specific value for comparing runs made with the same display and input method.
Stop the Clock | Free Online Cognitive Test by BrainRivals