INSTRUCTIONS

You will be shown an image of an arrow either pointing up (as shown above) or else pointing down. All you need to do is indicate whether it is pointing up or down.

On each trial you will be briefly shown a plus sign (+), which you should look at to bring your attention to the center of the screen.
Then as soon as you see an image of an arrow, quickly press the UP arrow key if the image is pointing up, and the DOWN arrow key if the image is pointing down. Arrow keys are usually found at the bottom right of your keyboard: If you do not have a keyboard you will be shown buttons on the screen you can press.

To start a series of practice trials, you can just click the button below and then immediately place one of your fingers on the UP arrow key and one on the DOWN arrow key so you can answer quickly. Finally, set yourself up so that your eyes are approximately 60 cm (24 inches) from the screen, and then:

Well Done!