Alternating rule costs
This is a solo practice run: your results stay in this browser tab and are never sent anywhere. To contribute to a class result, join a live session with a code instead.
You will see a letter and a number paired together (e.g., A4 or 2G).
The pair will be presented on a colored background which tells you which of the two tasks to perform:
Starts with a short practice round that is not scored.
Total trials: 50