This HIT is a challenging memory game. Start with a short practice (~1 minute)!
You did not catch enough repeats to move on yet. Please try again. If you exit now you will be paid $0.02 for this practice.
You will be paid $0.30 per HIT, each of which lasts about 5 minutes. Depending on availability and performance, you may be able to do multiple HITs in this series.
You will only have to complete the practice once and can skip it in the future.
Press the 'r' key any time you see an image you saw before. Repeats may be separated by many images.
Whenever you press the 'r' key, you will get feedback:
Press the 'r' key any time you see an image you have seen before!
Accept the HIT to continue!