getting e-prime to keep consistency over a repeted measures design

[liwenna]

err... you'd additionally need a piece of inline to tell the program
to use a fixed stimulus at session 1, but that shouldn't be too hard.
If session number is 1 then... kindathing.

On Apr 18, 2:37 am, liwenna <liwe... at gmail.com> wrote:
> what you could do, I guess, is to have someone else to make the
> randomisation for you. This would take the form of having a number of
> procedures in your total experiment, each of which containing a
> different combination of (two) stimuli. Then make an inline at the
> beginning of the experiment along the lines of 'if subjectnumber is x
> goto yz-label, wherein you place y1- to yz-labels at the beginning of
> each procedure. All the procedures then have to end with another
> inline saying goto endlabel, with endlabel being placed at the end of
> your total experiment. This way subjectnumber will account for the
> stimuli being used. If you then add a two-line list in each procedure
> determining which stimulus (piece of information) to use as the third
> stimuluse being either one predeteremined or one randomly pulled from
> a list, that could result in the desired design. This way you'll have
> to find someone to fill in the x's (subjectnumbers) and y's (procedure
> to be used, i.e. stimuli to be used) for you. As for total safety you
> could then pull the .ebs-file out of the folder and have the folder
> with the .es file locked with a password by your 'partner in crime'
> who will not reveal the password untill you're done testing as to
> assure double-blindness. I have some code to redirect to certain
> procedures based on subject numbers, somewhere, yell if you need it.
>
> Sincerely,
>
> liwenna
>
> On Apr 18, 1:53 am, liwenna <liwe... at gmail.com> wrote:
>
> > Hello David,
>
> > Are the three pieces of information randomly pulled from a list or the
> > same for all subjects? And what do you mean by 50% of the remaining
> > pieces? The third piece of information should be the same in as in the
> > first session in 50% of the trials/subjects or otherwise?
>
> > Sincerely,
>
> > liwenna
>
> > On Apr 16, 6:39 pm, David Moore <D.Mo... at bath.ac.uk> wrote:
>
> > > Dear all,
>
> > > I am currently writing a program which will present three pieces of
> > > information to participants paired with an image at a first time point.
> > > When participants return for a second session I would like to present two
> > > of the pieces of information the same but change 50% of the remaining
> > > pieces.
>
> > > Is this possible? And if so can anybody explain how?
>
> > > Best
> > > Dave
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