Words (up/down/left/right) scroll across the stage. Press a arrow key according to the text. You are being timed, so respond as fast as you can. Travel speed increases with time. A word hitting the edge of the stage before you respond correctly, ends the game. For an extra distraction, play with sound on! Simple? Maybe. Maybe not. The words are accompanied by arrows that may or may not correspond to the words. At the end, the average time of your answers for "congruent" words (the corresponding arrow matches word) and "incongruent" words (the corresponding arrow does NOT match word) is compared. Also see Stroop Effect Test #1: https://scratch.mit.edu/projects/1170938551 and Stroop Effect Test #2: https://scratch.mit.edu/projects/1172075113
In psychology, the Stroop effect is the delay in reaction time between neutral and incongruent stimuli. Wikipedia. An arrow that matches the word is considered a congruent stimulus. An arrow that does NOT match the word is considered an incongruent stimulus. An incongruent stimulus slows down our reaction time.
