In line problems

[Ben Robinson]

create a new list, MainList.
first proc in MainList can be called BlockProc.
next proc in MainList can be called RestProc.
then another BlockProc.
then EndProc.
so you have four rows in your new, MainList.

now drag your list containing 196 trials onto the BlockProc timeline.
drag your rest screen onto the RestProc timeline.

now go to your list with 196 trials.  click properties.  click the reset/exit tab.  tell your list to reset after 196 trials (all of them).  tell your list to exit after 98 trials.

what this will do is run 98 trials from your list of trials, then run the rest procedure, then run the remaining 98 trials, culminating with an EndProc, where you could thank people for their participation or tell them how well they did, etc.

ben


>>> <psp48d at bangor.ac.uk> 3/21/2007 12:41 PM >>>
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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