This program measures the "Stroop effect." How difficult is it for you to read the font color of a word out loud when the color does not match the word that is spelled out? Try it and find out! Instructions: 1. Click the "Start Timer" button. (If the button does not appear, click the green flag first) 2. Click either the "matched" or "non-matched" button. 3. Read the *font color* (not the word itself) of each word out loud. 4. Click the matched/non-matched button again to generate a new random list. 5. Once you have finished the pre-set number of trials (default 20, you can change this in the code), click the "stop timer" button to stop the timer. Want to use this for a science project? Check out this project about the Stroop Effect at Science Buddies: https://www.sciencebuddies.org/science-fair-projects/project-ideas/HumBeh_p027/human-behavior/stroop-effect-brain-function