My name is Jenny and recently I've programmed an experiment in Direct RT. In this experiment I'm presenting to subjects around 40 face photos in a bmp format. The subjects are asked to click on the RCtrl or the LCtrl, depends on the question presented. But it seems to be an apparent bug. Most of the time the experiment runs well, but sometimes one of the photos doesn't appear (one of the stims in column N in the input, please see attached the input) and instead the subject sees some sort of a small square. It's hard for me to indicate if it is always the same stimulus (I don't think it is). It happens on different computers, and there is no documentation of it in the output. As I said, it happens only part of the times I'm running the experiment. You may well try to run the input and find nothing's wrong. That’s why I'm frustrated.
The version I'm using is 8.00.131. The windows version is XP. Other experiment running on the same computers I'm running don't seem to suffer from that bug….
All the researchers are using the same versions of windows and Direct RT and the same computers…
Is there any chance somone heard something like that before?
thank you!
Jenny
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