This would be fairly easy, except for all of the scoring involved. The
original versions in wide use don't permit non-responses, and the
scoring routines are quite complex for these, so I can't guarantee that
the will provide reasonable output or even not crash if you make
changes. The basic advice would be:
. Edit the .pbl file using notepad++ or another similar progammer's
text editor. look for line 313:
(Assuming you are using the mouse selection)
resp <- WaitForClickOnTarget([comp1,comp2,comp3,comp4],
["1","2","3","4"])
This needs to be replaced by
resp <-
WaitForClickOnTargetWithTimeout(([comp1,comp2,comp3,comp4],
["1","2","3","4"])
If no response is made in time, the string "<timeout>" is returned.
You will need to handle all of the times when resp is used and expects
a a value like "1". The first thing would be to recode resp to be
something like "5" when it is a timeout:
if(resp=="<timeout>")
{
resp <- "5"
}
Then, you need to handle cases where resp is "5". One of the things
that happens is that it uses the response to look up the feature along
different dimensions. These are stored in three global variables
around line 130
gColors <- ["Red", "Green","Yellow","Blue"]
gShapes <- ["Triangle","Star","Cross","Circle"]
gNumbers <- ["1","2","3","4"]
Add a fifth element to each that indicates timeout
gColors <- ["Red", "Green","Yellow","Blue","TIMEOUT"]
gShapes <-
["Triangle","Star","Cross","Circle","TIMEOUT"]
gNumbers <-
["1","2","3","4","TIMEOUT"]
This will probably get you most of the way there, but you will need to
check carefully that the data are being recorded correctly. If you get
this far and have problems, send me your edited .pbl script and I'll
see what I can do.
Shane
On Thu, 2016-02-25 at 10:55 +0000, yaakov tayeb wrote:
> Hi and let me thank you for your great work!
>
> I need help, please. Even tough I know a bit about programming I
> couldn't handle it myself.
>
> I want to use a speeded version of the task, meaning, if the subject
> didn't respond in 3 sec, the next trial is presented, and we have a
> "time error".
>
> Can you help me modifying the script?
>
> Thanks a lot!
>
> Yaakov.
>
>
> --
> Yaakov Tayeb, Phd Student
> Department of Psychology, Bar Ilan University
> The Gonda Multidisciplinary Brain Research Center
> Bar Ilan University
> Ramat Gan 52900 Israel
> Sent from Mobile
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