Have you already heard of the Stroop effect? It is so-called perceptual confusion: the conflict between the two hemispheres of the brain. The right hemisphere wants to say the color, the left hemisphere wants to read the word. Such prinzip you can find in the task, when you have to name the colors of the words one after another in which the words are written (and not read out the words themselves). You have to do it as fast as possible without any mistakes. Have you ever tried something like this? In Stories you can find a photo with this mini game to play ;-)