Feedback & automatic commands in a dual-task experiment

[ms]

Problem sorted, so please don't spend any time on this.

On Feb 18, 2:48 pm, ms <annh... at yahoo.com> wrote:
> This is a dual task experiment and participants first hear a sound
> (Task 1) and soon after they see a word on the screen (Task 2). They
> have to respond whether the sound is a high or a low tone by pressing
> a button for each one of them (Task 1), and whether the word is a word
> or a nonword by pressing another button for each one of them (Task
> 2).
> I want in this experiment to give emphasis to Task 1, so I would like
> to add a short practice session with a few trials, say 12, before each
> block. At the end of this practice session and before each block
> begins, participants will be reminded that they should respond fast
> enough to Task 1. For example Fast Enough (if they respond within
> 560ms to Task 1) and Too Slow (if the response is longer than 560ms to
> Task 1).
> Perhaps it would be good if I could also give them in the same
> feedback a percentage of their correct responses, but if it is too
> complicated this way, I could leave it out.
> To summarize, I would like to add a practice session with 12 trials
> before each Block and give participants feedback on how fast or slow
> they are in their responses of Task 1 in the practice session.
> The probIem is that I have 2 different tones for Task 1 (at 300hz &
> 900hz), so I am not sure how I could give feedback to the sum of the
> trials for Task 1.
>
> Also, I was wondering whether there is a command that automatically
> generates the structure of a TrialProc to other blocks, and if so, how
> I could disable it. I am making changes on an E-prime template, and
> anything I add in a bock is automatically added to rest of the blocks,
> but I don't want that. I want the feedback to appear only after each
> Practice Block, NOT all Blocks. (I guess there must be in the script a
> command that generates automatically everything I try to do). So my
> second question is how can I locate that command in the script and
> disable it?
>
> I would really appreciate any help.
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