Test instructions
A grey box will appear on screen and randomly turn black. You must react quickly by clicking/tapping when it turns black. The test runs for 30 minutes and measures your sustained attention and reaction time.
What It Measures
- Sustained attention over extended periods
- Reaction time to visual stimuli
- Vigilance - remaining alert during long inactive periods
- Impulse control - avoiding false reactions
How It Works
- A grey box appears on screen
- The box randomly turns black for brief moments
- Click immediately when you see it turn black
- Tests vary from 3-30 minutes - build your endurance
Expert Tips
- Stay visually locked on the target area
- Click immediately when the change happens
- False clicks (clicking when nothing changed) hurt more than misses
- Practice builds mental stamina for longer tests