Grab a friend or two and have fun with these simple experiments. No experience necessary. Perfect for student projects, classrooms, friends and families. Your participation is greatly appreciated!
If you already registered, login here to load your details. Make sure you've selected your country above.
Hold down control (mac: command) to select multiple values.
After you click "Begin Experiment", you will receive up to six calls during the time slots you have chosen. You will receive confirmation of your chosen times by SMS.