Stroop measures how well you can block out distraction. You will see colored words presented at the center of the screen. You’ll be asked to respond to the color of the words. Press the button matching the color of the word. In the example below, you should press the “B” button (for Blue, the color of the text).
Stroop tests your attention and executive function. The ability to sort out distracting information from meaningful information is an important part of our cognitive abilities, because much of the information we perceive isn’t relevant to the tasks that demand our attention at any given moment.