I have a problem with my output. My experiment is set up so that three events (a fixation, another text file and a sound file) all present concurrently, this makes each trial one stimulus item. I use blocks to displays a 28 of these trials in which are 4 target trials/items that require a mouse press response.
When I run it through without responses the cumulative time increases by 264ms for each trial and does so like clockwork.
I thought I would be able to get reaction times using the cumulative time and reaction time columns: minus the cumulative time for the presentation of the target trial from the cumulative time of the trial in which the response is made and add the reaction time.
However, I have noticed that this seems low, but the cumulative time from the trial in which the response is made and the trial following it is oddly high - no longer the regular 264.
Any suggestions would be great
I have attached a sample of my output
reactiontime prob.txt (6.47 KB)