E-Prime data file

[Hank Jedema]

Hi All,

Here is something in the E-data file that seems problematic and
puzzles me: In a stoptask I use a number of if - then scripts to
present a sequence of stimulus slides. The script occurs just after
each slide and dependent on the whether a response was received or
that the slide simply timed out (i.e. reached the end of its slide
duration), the script will advance the trial on to the next slide
(let's say slide B if a response was received or slide C if no
response was received. The issue that I am having is that when I log
the response and onset time etc for slides B and C, the E-data file
list values for all, even though the slide B and C are mutually
exclusive. I would expect a "NULL" for the slide that was not
presented, but instead if slide B was actually presented, it will list
the values from a prior trial for slide C duration, slide C response
etc, and vice versa. The program is is structured so that 2 nested
lists specify the trial type and stimulus duration and the program
properly runs the correct number of trials (300). In the E-data file
each trial provides one line of data. What am I missing? Thanks very
much for your help.
Hank

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