How many items can you juggle in mind?

This page contains two versions of a test of "working memory" or the ability to hold and manipulate multiple things in your conscious awareness at once. Though the neuroscientific basis of working memory is complex, research by Richard Clark and colleagues (2004) suggests that the more items you can hold in mind, the faster your brain's preferred frequency for communication is. To learn more about your brain, click the link on the left to participate in our research, or the link on the right if you'd prefer we not collect any data, and to do the quicker test. If you want to learn even more about your brain, consider picking up a copy of The Neuroscience of You, available August 2nd!