In line problems

[De Brito, Stephane]

Hi Jim,
 
I have designed an experiment with 2 rest periods. I did the following: I created a trial counter which I declared in the User script  and wrote in a global inline at the begining of my experiment (gnTrial_Counter =0) In my trialproc timeline, I put an empty textdisplay object, which I called 'break'. I assigned it an infinite duration and the spacebar as allowable reponse in the object property. I put a Label after the 'break' textdisplay so that the textdisplay is skipped except on trial 120 and trial 240. Below is the script I used in my inline before the textdisplay object. Hope this helps. Get back to me if it's not clear.
 
best,
 
stephane 
 

gnTrial_Counter = gnTrial_Counter+1

 

if gnTrial_Counter = 120 then

 

            break.Text = "Have a break now" &_

                                                "\nPress the spacebar when you want to continue"

elseif gnTrial_Counter = 240 then

            break.Text = "Have a break now" &_

                                                "\nPress the spacebar when you want to continue"

else 

            Goto Label1

 end if

 
------------------------------------------------------------------
Stephane De Brito, PhD student
Institute of Psychiatry, King's College London
Forensic Mental Health Science Department
Box P023
De Crespigny Park
Denmark Hill
London SE5 8AF
United Kingdom

Tel: + 44 (0) 20 7848 0711
Fax: + 44 (0) 20 7848 0754
website: www.iop.kcl.ac.uk


________________________________

From: eprime at mail.talkbank.org on behalf of psp48d at bangor.ac.uk
Sent: Wed 21/03/2007 16:41
To: eprime at mail.talkbank.org
Subject: In line problems



Dear E-Prime Experts,

I have designed an experiment that has 196 trials, and I wanted to introduce a
text page after trial 98 offering a rest period to the participant. My problem
is twofold:

1)First of all I tried to get e-prime to keep track of what trial we are on by
referncing the "Block" attribute. I did this as follows:

Dim Trial
Trial=c.GetAttrib ("Block")

However, when running it, e-prime did not recognise block as an attribute. So I
tried to create my own:

Dim Trial as integer
Trial = Trial + 1

This also did not work.

2)Secondly, I placed the "rest" page in my trialproc timeline, and tried to get
e-prime to access it via an 'inline' at the end of the timeline:

If Trial = 98 then
Rest.run
        'referncing my textpage for the rest period
Else fixation.run
        'this last line is trying to get e-prime to revert to the beginning
        'of the trialproc timeline if the trial is not 98. This doesn't work
End if

How do I get e-prime to keep track of the trial number, and how do I introduce a
rest page if a certain trial number is satisfied?

Yours in confusion!

Jim Grange.
University of Wales, Bangor.




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