Institute for Language Sciences Labs


Advanced Digit Span


  • Boilerplate experiment (default)
  • Author(s): Chris van Run
  • Download link
  • Modules:


Memory span test to measure the longest list of digits that a participant can recall after presentation. The participant is visually or audibly presented a sequence of digits. The participant’s task is to type in the digits he/she saw in presented order or reversed order. Trials repeat in sets until a mistake is made or until a maximum number of trials done. Be sure to view the ‘modules/‘ for fine tuning your experiment.


  • Language options (Dutch/English)
  • Presentation options (Visual / Audio / Both)
  • Pseudo-random stimuli generation or selecting a predefined set.

Self-paced. Output:  highest achieved span length, number of trails, number of faults.


Installation instructions

To run the experiment you need the Zep experiment control application. At the ILS Labs this is already installed on all systems. To install Zep at home or on your personal laptop go to this link and follow instructions there.

To install this experiment:

  1. Download the experiment from this link.
  2. Extract the .zip-file into a target folder (any location will do).
  3. This will produce an experiment folder under the target folder.
  4. Read the readme that comes with the experiment.
  5. Open the console application (under Windows click windows-terminal.bat, under Linux click and type the following command:zep digitspan
    In this command digitspan represents the name of the experiment you wish to run.


This experiment script comes with absolutely no warranty. It is your responsibility to pilot test the script and analyze the results before using the script for your research. Be sure to know what the adjustable parameters of the script mean and check whether the script presents stimuli and records responses exactly as you want it to. If necessary, ask the author of the script to explain the things you do not yet understand.