Randomization question.

[biometricsassistant]

Nevermind,  Figured it out,  THANKS!

On Jan 14, 9:56 am, biometricsassistant <clar... at upmc.edu> wrote:
> Thanks so much for getting back to us! Your information has been very
> helpful, but I am still struggling with the exact sequence to set up
> on EPrime. Bearing in mind that I am very new with this program (and
> therefore pretty ignorant), I will try to give a more detailed
> overview of my goal here. I am trying to set up an encoding task.
> Essentially, there will be two levels that each subject is exposed to:
> nonsemantic and semantic encoding. The order of these two tasks will
> need to be randomized, so that some subjects will do the semantic task
> first, and others will do the nonsemantic task first. For each of
> these tasks, I want the program to select from a master list of 40
> total words that is broken down into 5 lists of eight words each, each
> list representing an individual semantic category (e.g., animal words,
> furniture words, etc.). So, I would like the program to present 20
> randomized words (four from each semantic category) to each subject
> for each level (nonsemantic vs. semantic). What I continue to have
> trouble with is how to translate that into the actual EPrime program.
> Could you walk me through the specifics of how to set this up please?
> I think that your suggestions for having nested list objects and an
> overall Trial List are reasonable, but I am not sure how to fit the
> random encoding procedure (semantic vs. nonsemantic task order) into
> it. Please let me know if I can provide additional information. Thanks
> so much for your help here!!
>
> On Jan 2, 4:17 pm, Matt Lenhart <matt.lenh... at gmail.com> wrote:
>
>
>
> > Hi Adam,
>
> > There are a couple of ways you can do this. The easiest would be to
> > use nested List objects. Essentially, you would create 5 List objects
> > that each represent a category. You would then enter the 8 words for
> > each category into their respective List. In your TrialList, you would
> > have 5 levels. Each level would reference one of these Lists under its
> > Nested column. Then, you would set the Weight column for each level to
> > 4. At run-time, E-Prime will choose a stimulus from the specified
> > nested List object. The TrialList will run 20 trials (4 trials from
> > each of the 5 categories) and then exit. If the nested List objects
> > are set to select randomly (but without replacement), all 40 words
> > will be presented randomly and only 4 during each run of the TrialList
> > (i.e. you could use the same TrialList for each phase of the
> > experiment since it will run 20 trials each time).
>
> > Please let me know if you have any questions.
>
> > - Matt Lenhart
> > PST Technical Consultanthttp://pstnet.com- Hide quoted text -
>
> - Show quoted text -
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