Free cognitive game

Reaction Time Test

Measure how quickly you detect a visual change and turn it into a motor response. This test targets processing speed and alert attention.

How to Play

  1. 1Press Start Game and wait for the signal panel to change from red to green.
  2. 2Do not click while the panel is red. Early clicks count as false starts.
  3. 3When the panel turns green, click or tap as quickly as you can.
  4. 4Complete all five trials. Your result is based on average reaction time, false starts, and consistency.
Learn More

Progress

Trial 1 of 5

0%
Average

-

False starts

0

Research basis

Deary-Liewald Reaction Time Task

Deary, Liewald, and Nissan published a simple and four-choice reaction time task in Behavior Research Methods in 2011.

Human Benchmark reaction statistics

Human Benchmark reports a 273 ms median and 284 ms average across large-scale browser reaction time submissions, with device latency caveats.

Processing speed and achievement

Geary's longitudinal mathematics study treats processing speed and working memory as domain-general contributors to academic learning.