Memory and observation are essential to everyday existence - and when used to give evidence in court can make the difference between guilt and innocence. It’s essential we get it right.

This is an experiment to see how well you can count a simple repeated action. It takes a lot of concentration to get it right - but imagine a court case depended on it. Start the video and follow the instructions on the soundtrack.

How did you do?

Click the image to watch the video.


Thanks to Professor Dan Simons of the University of Illinois at Champaign-Urbana for permission to use this video.