In line problems

[psp48d at bangor.ac.uk]

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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