Dual Task design

[liwenna]

Hurray and rejoice! The broken 'search this group' function seems to
be fixed!

Robert I never did dual taks design so no first-hand help here. But I
went searching for a thread on dual task design that I remembered and
it turns out that there have been many threads on dual task design.
You can find them all here:
http://groups.google.com/group/e-prime/search?group=e-prime&q=dual+task&qt_g=Search+this+group

Enjoy!

liw

On Feb 1, 9:59 pm, CT_Robert <dolphin2... at gmail.com> wrote:
> Hi All,
> I am new to E-Prime, and I've been through a few of the tutorials.  I
> think I need some advice on how to set-up the following design with 2
> tasks.
>
> 1) Task 1.  Conditioned Fear.  Subject hears one of two distinct
> tones.  Each tone is on for 7.5s.  For TONE1, after the 7.5s, a loud
> aversive tone is played for 500ms (CS+).  For TONE2, after the 7.5s,
> no tone is played (CS-).  There is a 10s ITI between these tones
> occurring.
>
> 2) Task 2. Go/No-Go Task.  Participant sees an X or a K in the middle
> of the screen.  Participant is to press the space bar when he sees an
> X and to withhold responding when he sees a K.  These are on for 500ms
> and have a jittered ITI.  This task should occur thoughout both
> conditions of Task 1 as well as during the ITI.
>
> The goal is to see how performance on the Go/No-Go task is affected by
> the increased arousal seen in the fearful condition (TONE1), so I will
> compare responding during TONE1 and TONE2.
>
> I somebody could give me some design advice, I will give it a try and
> return if I encounter problems.  Offhand, I am trying  Trial Procedure
> with two Slides, 1 auditory, 1 visual.  But, they seem to proceed
> sequentiall.  So, my 7.5s Auditory stimulus plays completely before
> moving on to the GoNoGo stimulus.  I'd like the Auditory to start, and
> then move on to the next slide in the Procedure.
>
> But, perhaps this is a bad approach?  Advice?
>
> Thanks so much.
>
> Robert

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