Sensory-Motor

Reaction

The moment the screen turns green, how fast can you react?

This is the simplest way to check how quick your reflexes are. Wait on the red screen, and the instant it turns green, tap. Your time is shown in milliseconds (ms), or thousandths of a second.

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Reaction start screen

At a glance

Players
1 player
Ages
5 and up
Play time
As long as you like (a few seconds per try)
Levels · Modes
One mode

How to play

  1. Tap Start, and the waiting screen begins right away.
  2. While "Wait…" is showing, hold still and don't tap.
  3. When the screen turns green and says "Now!", tap as fast as you can.
  4. Once your reaction time appears, tap again to start the next try. There's no limit, so keep going as long as you like.

Tips

What it practices

Quick reflexesPractice moving the instant something appears, again and again.
Sustained attentionKeep watching until the end, even though you never know when the screen will change.
Impulse controlHolding back until the green appears is practice in waiting, too.

Great for

Good to know

Reaction time shifts a little every day depending on how you feel. Try several times in a row to find your fastest time, and play around the same time each day to learn your own baseline.

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