feedback display problem with incorrect state

[Güzin Mazman]

I have already searched for  that problem in the pst forum.
I have found a similiar problem, but there was not a reply or solution for
that problem. You can see the thread below:

http://dedicated.pstnet.com/forum/Topic5723-23-1.aspx?Highlight=feedback

Since anybody wrote an answer for that problem in the forum I decided
asking to this group.

I tried to change filename, attribute name, image type (as bmp, png jpg)
etc. but problem is stil continuing.
I am sending an example of my problem at the attachment. This is not my
actual experiment, only a small example to show my problem.

On 19 Nisan, 19:49, David Vinson <d.vin... at ucl.ac.uk> wrote:
> Hi Güzin,
>
> Your problem sounds like a tricky one indeed.  If I understand your
message, on the first incorrect trial the "Incorrect" feedback screen is
displayed, but without the desired image. On all other trials the feedback
is displayed correctly.
>
> At first I thought there could be a problem with the assignment of a
filename via the FB attribute. But this should produce an error if a
filename is not assigned to an image when it is meant to be displayed.
>
> One question is whether the "incorrect" feedback slide is actually being
displayed on the problematic trial. That is, is the incorrect feedback
display occurring but failing to load the desired image?  Or is the
incorrect feedback failing to display at all?  this is easy enough to test,
just add some text on the "Incorrect" slide in addition to your desired
image.
>
> Another angle would be to try and add a brief interval (e.g. Wait 100)
between your response object and its feedback screen. This might be
superstitious behaviour on my part but sometimes I find this sorts out
"unusual" behavior with feedback displays.
>
> Please report back and let us know how it turns out.
> -dv
>
> On 19/04/2012 10:28, SGuzin wrote:
>
>
>
>
>
>
>
> > I have a problem with feedback display. In incorrect state of feedback
> > slide I put an image display which gets the images from the FB
> > attribute(fb1.jpg, fb2.jpg, fb3.jpg, fb4.jpg) in the list. When the
> > participant’s answer is incorrect for the first time, feedback screen
> > comes as blank (I mean image does not appear). But for the second time
> > for rest of the answers image appears on the screen. I have randomized
> > question to see whether is there a problem with images. But always
> > only first time image does not appears not being dependent on which
> > image.
> > I tried to put image display on correct state, but there were no
> > problem.
> > I do not understand why the incorrect feedback comes blank for the
> > first wrong answer and not for the others.
> > I will be thankfull if you can  help me whith this.
> > Güzin

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