[edited from support email]

We were finding that we were missing all of the data for some cases and finally figured out the problem. The RA that ran the sessions where there were missing data was terminating the medialab session prematurely, thus causing a loss of data. We have a screen at the end of the final task that says 'congratulations, you have finished the task' (with celebratory balloons on it). After that screen appears, the RA can either use ctrl+ right arrow to advance to the last screen or simply wait until the program advances itself to that final dialogue box.

It turns out that this RA would sometimes pull up the Windows task bar at the balloons/congratulations screen and exit out of program from there at that time. We think it didn't happen for all of her subjects because she'd run multiple subjects in one session and simply couldn't close all of those congrats windows prematurely before they automatically advanced to the final screen where the data is recorded.

Now we will always include something in our protocols to alert RAs to this issue (I am surprised it hasn't occurred before in the 2 years we've used MediaLab). I really appreciate your helping me in trying to solve this problem. I am also relieved to discover it was human error rather than a problem with our program.

Thanks again for everything. Happy Holidays.