# A Digit Span Experiment

This is a standard digit span experiment. On the right is a box marked 'digits will appear here'. Next to this are two buttons. Click the 'next list' button to see a string of digits. When each list has finished, the box will reset, and you should type in the digits you have just seen accurately and in order. You don't need to use the mouse to select the text box to type the digits into, this happens automatically. There are six digit lists. When you have finished all of them, click the 'check answers' button.

This experiment suggests that the capacity of STM is around seven digits.