Seeking help regarding Eprime experiment structure

[Paul Groot]

Highlighting can done quite easily using a small piece of inline script.
The trick is to get a reference to the selected object, change some
properties (i.e. borderwidth and color) and redraw. A similar topic was
discussed not long ago:
https://groups.google.com/forum/#!topic/e-prime/keTwpjv5rgY

Going backward is less trivial. One way to do this is to put the judgement
list in the procedure of a new (parent) List object. This parent list
object should run 'forever' (using a high cycle number). Then you have to
add a piece of inline script at the beginning of the new (parent) procedure
to pick a specific trial of the judgement list. (Probably using a global
variable to keep track of the 'active' trial). The judgement list should
only run one sample. At the end of the parent procedure you should add a
small piece of inline script to terminate the parent list once the active
trial number exceeds the number of judgement trials. Within the judgement
list you should have some inline to increment and decrement the global
index according to the selected button.

I remember that the SRBoxUtilities example (
http://www.pstnet.com/downloads/srbox/SRBoxUtilities.zip) contains a
similar technique for picking a specific item from a list. However, that
specific example makes use of goto-labels instead of a parent list, which
is not the most elegant way to go. Also see the attached example script,
which can be used to see how the parent-list mechanism works.

Sound difficult, but should be do-able if you have some programming
experience.

Best,
Paul



On 19 July 2013 09:23, Taewon Chung <tchung215 at gmail.com> wrote:

> Hello everyone, I am posting this in hopes of receiving some tips, help in
> putting together an experiment using the E-Prime software. I am not very
> experienced with the software, and would greatly appreciate any and all
> help.****
>
> The experiment is a basic picture judgment task, with a picture in the
> middle of the screen, with 9 ‘slideimage’s underneath at the bottom of the
> page. The 9 ‘slideimage’s each indicate a certain level of emotions. The
> emotional levels increase going rightward (e.g., sad face at the very left,
> neutral face at middle, happy face at very right), and the participants
> make a decision based on their respective emotional responses to the
> picture with a mouse. For every single picture, the participant makes
> emotional level judgments for 3 different types of emotions. Essentially, 3
> responses are recorded for each picture stimuli, after which the next
> (random) picture stimulus is given, and another 3 responses are given for
> the stimuli. I was wondering also if there is a way to add in two aspects:
> One being a [previous] and [next] button on the top left and right sides of
> the screen, for easy navigation for the participant, and the next being a
> way to show which response the participant selects (a shadow/highlight
> around the chosen slide image, etc.) ****
>
> I have already looked up the 'VisualAnalogScale.es<https://psychologysoftwaretools.zendesk.com/attachments/token/m0q4zkz1ydfeesq/?name=VisualAnalogScale.es>'
> file, but this task utilizes Slide-Texts rather than Slide-Images, and am
> not sure how to make the change, since it doesn't seem that a simple
> Object-name-change works.
>
> Once again, I appreciate any and all help regarding this experiment.
>
> Any input would be greatly appreciated. Thank you very much.
>
>
> Please refer to the attached jpeg image file for a sample of the layout.
> thank you very much!!
>
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