correct answer depending on "group" startup information

Mon Nov 9 22:53:41 UTC 2009

Thanks for posting that Tobi!

Good to know that I am not crazy :p Just pushing some wrong buttons
every now and then ;)

Additionally, I use the above thing in combination with another few
lines of script that imports a randomisationkey (in the case of my a/b/
c/d-version task this could be for instance: D C B A B D A C) from
a .txt-file and uses that to assign a version based on subject number,
so subject 1 in above case gets version D, subject 2 version C,
subject 3 version B etc etc, subject 9 is again version D, subject 10
C etc etc). This way my students don't have to bother with randomising
nor keeping track of assigning 1 of 4 different e-run files to each
subject etc. etc. If only our ICT-guys would allow us to password-lock
folders on the testcomputers it would be the perfect double-blind
system.

I'll post the lines here (it's not that hard but I am not entirely
confident that I'll type it all right from heart) if you're
interested.

Greets,

liw

On Nov 9, 7:06 pm, Tobi <tobias... at gmail.com> wrote:
> Thank you very much for your e-mail. Only now I had the time to have a
> close look at the problem again. It helped very much to solve the
> problem. Just to maybe help others, I attach your e-mail here in the
> forum so that it can be found by others. I guess that you're in favor
> of that as you've already tried to post it aswell but then lost it.
>
> "Hello Tobias,
>
> Only last week did I have something similar at hand...
> In my task a version (A B C or D) is assigned to each subject based on
> subject number. Several features differ between the four different
> versions, one of which is the
> order of the response keys. I solved this as follows; in the slides
> the correct response refers to an attribute called cresp, which is
> declared on the user tab. In the triallist I have two collumns one
> called abcresp, other one cdcresp (version A & B, and C & D are the
> same response-key wise). An inline at the start of each trial tells
> eprime to take the value from either abcresp or cdcresp and use this
> value as cresp, depending on the variable 'version'.
>
> Step 1:
> declare the variable cresp on the user tab: dim cresp as string
>
> step 2:
> tell the responseslide that the correct response is [cresp]
>
> step 3:
> make two attribute collums in your triallist that contain the correct
> response for both your 'groups', for instance group1cresp and
> croup2cresp and fill them with D's and F's accordingly
>
> step4:
> add an inline at the start of your trialproc that contains something
> like this:
>
> If c.getattrib ("group") = 1 then
>        c.setattrib "cresp", c.getattrib ("group1cresp")
>
> If c.getattrib ("group") = 2 then
>        c.setattrib "cresp", c.getattrib ("group2cresp")
>
> end if
>
> I hope this helps.
>
> Best regards,
>
> liw"
>
> On 16 Sep., 17:03, liwenna <liwe... at gmail.com> wrote:
>
> > I think I posted a reply to this thread (I wrote one for sure ^.^) but
> > it doesn't show up... my guess is that I hit 'reply to author' by
> > accident, but I can't find a record of that anywhere. Tobias, if you
> > didn't receive mail from me, let me know, then I'll repost (right now
> > I am a bit lazy to do so... it's time for me to go home...).
>
> > Have a good evening everyone!
>
> > On Sep 16, 11:56 am, Tobi <tobias... at gmail.com> wrote:
>
> > > Thank you,
>
> > > that works fine. Unfortunately, in my real experiment (this example
> > > was kept simple due to comprehensiveness) I don't have 2 lines in my
> > > list but 640. I guess there is an easier way than using 640*2 lines in
> > > this InLine. If I understand correctly, "List1.SetAttrib 1" changes
> > > the first line in the list and "List1.SetAttrib 2" changes the second
> > > line.
>
> > > That means, that the CorrAns value is replaced (seehttp://chilion.com/probl1.JPG
> > > ) no matter if [yes] or [no] was specified. In fact in my real
> > > experiment I also have only two variables. Easiest would be to change
> > > [yes] to let's say "D" and [no] to "F" if c.GetAttrib("group") = 1 and
> > > the other way round if it's 2.
>
> > > Is that possible?
>
> > > Thanks already in advance!
>
> > > Cheers,
> > > Tobias
>
> > > On 5 Sep., 23:08, Shin-Yi Fang <shinyi.f... at gmail.com> wrote:
>
> > > > Hi,
>
> > > > I think group is not really a variable. It  is an attribute. You will need
> > > > getattrib function. The following script probably is what you need.
>
> > > > if c.GetAttrib("group") = 1 then
> > > >    List1.SetAttrib 1, "corrAns", "w"
> > > >    List1.SetAttrib 2, "corrAns", "q"
> > > > else
> > > >    List1.SetAttrib 1, "corrAns", "q"
> > > >    List1.SetAttrib 2, "corrAns", "w"
> > > > end if
>
> > > > Best,
>
> > > > Shin-Yi
>
> > > >    List1.SetAttrib 1 "corrAns")yes = "q" and no = "w"
>
> > > > > if group = 2 then yes = "w" and no = "q"
> > > > On Fri, Sep 4, 2009 at 6:10 PM, Tobi <tobias... at gmail.com> wrote:
>
> > > > > To be more understandable, here are two screenshots, one of the list
> > > > > and one of the InLine:
>
> > > > >http://chilion.com/probl1.JPG
> > > > >http://chilion.com/probl2.JPG
>
> > > > > On 4 Sep., 19:40, Tobi <tobias... at gmail.com> wrote:
> > > > > > Hi everyone,
>
> > > > > > I have a question concerning the "group" variable than can be prompted
> > > > > > for in the beginning of each session. I want to change the correct
> > > > > > answer key according to this group variable (and change the key
> > > > > > assignment as a consequence of corse).
>
> > > > > > In a very easy example there might be a trials with a target or no
> > > > > > target (blank). One group should answer with "w" for TARGET and "q"
> > > > > > for BLANK, the other group the other way round:
>
> > > > > > LIST:
>
> > > > > > ID             Procedure   corrAns
> > > > > > -------------------------------
> > > > > > 1               blank           [no]
> > > > > > 1               target  [yes]
>
> > > > > > I used this InLineas the very first line:
>
> > > > > > dim yes, no
> > > > > > if group = 1 then yes = "q" and no = "w"
> > > > > > if group = 2 then yes = "w" and no = "q"
>
> > > > > > Unfortunately I get the error message "Unknown function "group"".
> > > > > > What does that mean? I am not so familiar with Basic, so any help
> > > > > > might be very cool.
> > > > > > Maybe you have other suggestions to change key assignment by the help
> > > > > > of startup information.
>
> > > > > > Thanks a lot,
> > > > > > Tobias
>
> > > > --
> > > > Ph.D. Student
> > > > Department of Psychology
> > > > University of Connecticut
> > > > and
> > > > Haskins Laboratories
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