Be patient, don't press anything, and wait until the green background flashes. When it does, press space. Repeat this 5 times and after that, you will see the result. Results > 5 s: Did you not see it flashing? 5 > ? > 2.5 s: That's very slow. 2.5 > ? > 1 s: Your brain is slow. Between 1 and 0.7 s: You could be faster. Between 0.7 and 0.35 s: Congratulations! You are fast enough! Less than 0.35 s: How are you this fast?
