http://www.empirisoft.com/directrt.aspx

• This software is used to present stimuli, or collect reaction-time data
• the DirectRT files can either be called up by themselves or be automatically called up using Medialab experiment files (if they are included in the experiment files or included in .que questionnaire files)
• the files used by this program are .csv (comma-separated values) files that are programmed and used for input files
• these files need to be formatted in a specific way so that labelling, timing, and correct answers for the data are recorded appropriately – otherwise, errors can persist
• see “TrackPerformance” files in the DirectRT folder (either on the “C:” drive or in “Program Files”) while testing input files to see if errors present themselves; if this is the case, programming needs to be altered so that the files do not write errors constantly. This will cause problems for data collection
• in the event that DirectRT files (.csv) are included directly into Medialab experiment files, ensure that  there is a “Continue” screen in the .que files or in-between every .csv file; Medialab and DirectRT communicate with each other, and if a previous session of DirectRT hasn’t finished (e.g., a “pre Go-NoGo) and another DirectRT task is called up right away (e.g., a “Flanker”) – the second session could fail to open or the process may provide errors until DirectRT is manually exited.
• End sessions early using “Esc” key (escape)