You can download the default XML on the downloads page. In this section I will point out the customisation options at your disposal by modifying values in the XML.

Under task settings there is a section of code where we tell the application where to find the executable that handles the digit span task. The property name/value keys here are where we can set task-specific properties.

Number of trials

You can select how many trials of each span size you want. The properties to edit here are:

• 'spanTwoTrials'
• 'spanThreeTrials'
• 'spanFourTrials'
• 'spanFiveTrials'
• 'spanSixTrials'
• 'spanSevenTrials'
• 'spanEightTrials'
• 'spanNineTrials'

The default values for these properties are "3" for spans 2 through 7 and "0" for spans 8/9. Therefore as it stands the module will administer 3 trials at each list length up to 7 and none at list length 8 or 9. Simply change the integer values within the quotes for each span*Trials property to get the desired number of trials.

Sequential/Randomised trial order

This property decides if the trials are administered in sequential order or not with regards to the list lengths. If sequential then all list length 2 trials are given, followed by all list length 3 trials, and so forth. However, it is often the case that a researcher may wish to administer these trials in a random order so that the participant is not aware on any given trial how many digits they will have to store/recall. The property to edit is:

• 'randomisedTrials'

The default value is "0" which is the code for sequential order. The alternative is "1" which is the code for random order.