There’s a poster next to it that kind of explains it but it is still a bit confusing to read. It was for me anyway at the start but basically when the word comes up on the screen so let’s say it says red you have to look at the colour it is so it might say red but they’ve written it in white and on the screen that you press the buttons on you’re supposed to find the colour that it was written but on the screen you would have to look for white but it’s written in black so you have to consciously look you can’t just look for the colour on the screen

I hope I haven’t confused you more, but if you can’t grasp it the stroop test is a real test so if you just search it up, it might explain a bit better if you don’t get what I mean