Have you ever sat in your car at a stoplight trying to predict the exact moment the light will change? You might say that these tests are for the easily amused -- those of us who can become surprisingly absorbed in even the simplest games. These reflex tests are very simple, and yet strangely captivating. Scientific tests have also shown that reaction times to simple tasks have high correlations with g the general intelligence factor.

Color Test
Simply click the start button and wait for the screen to change color. As soon as it does, click the stop button. The Tester will report how quick your response time was (along with a snide remark challenging you to do better). If you think it will make any difference, you can choose from a list of background colors. Good luck!

Image Test
Simply click the start button and wait for the image to appear. As soon as it does, click the stop button or press enter. The Tester will report how quick your response time was (along with a snide remark challenging you to do better).

Letter 'X'
How many times can you hit the letter 'X 'in 30 seconds?

Dots
How many dots can you find in 15 seconds?

Average time
This test returns the average result of five reaction times

Stop the Clock
Stop the counter as close to 500 as possible.

Check the Boxes
How many boxes can you check in 20 seconds?