Game 01 · five visual trials
Reaction Time
Wait for the signal, then click, tap, or press the focused button as quickly as you can.
Ready when you are
Five quick visual trials. Start when you are settled.
Use the button with a click, tap, Enter, or Space. Browser, screen, and input latency affect timing.
About these games
Reaction Time
This game records the time between a visual cue and your response across five trials.
How to play
- Start the game with the button. When it has keyboard focus, you can activate it with Enter or Space.
- Wait for the visual signal, then click, tap, or activate the button as quickly as you can.
- Complete five trials. A response before the cue is treated as an early response and does not count as a valid trial.
Scoring
Each trial is shown in milliseconds. The displayed average is the arithmetic mean of the five recorded valid response times; a lower number is a quicker response in this session.
Limitations
Display refresh rate, browser scheduling, device speed, input latency, and anticipation affect the result. This game is not a clinical assessment, a standardized reaction-time test, or a measure of general cognitive ability.