How to schedule "breaks" within a block?

[Paul Groot]

it should be possible to do this without any coding magic. Just create two
levels using a block list and trial list (like in a 'basic' paradigm). Then
set the number of block samples to 4 (using weight 4 for example). The
trial list should contain all 2x48 trials, using random selection as you
wish. The trick is to terminate the trial list after playing 24 trials by
setting the 'exit list' property to 24 samples. That's it.

The next thing is to create a proper pause screen. Although this can be
done by including a slide or text object after the trial list, you need
another small trick to make sure that the pause screen is not displayed
after the last block. My preferred solution is to use a slide with two (or
more) tab pages. One tab contains the text that should be displayed between
blocks, while another page is used to show after the last block. Then add a
column to the BlockList to specify the ActiveState property of pause slide
(using the [] syntax). More complex designs might require other techniques,
but in most cases switching the ActiveState property of the slide will do.

Have a look at the attached example script to see how I did this from
scratch (in only two minutes) using a fresh 'basic' script.

best
paul




On 7 August 2013 19:29, <cshalloran at gmail.com> wrote:

> Hello Community,
>
> I have no coding background. I am brand new to E-Prime, and I need help.
>
> I am designing an experiment in which I have 48 unique samples, weighted
> 2, random order, that I wish to separate into 4 equal "blocks" in order to
> give our volunteer subjects cognitive breaks from the task. That is, I want
> a break screen with no time limit that the subject can leave by pressing
> {SPACE} and then continue with the next randomized sample (numbers 25, 49,
> or 73, as appropriate), randomized as if that break screen was not there
> and the subject was running through the 96 samples consecutively. I know I
> could program 4 blocks to each be followed by my desired break screen, but
> this would result in a constraint on the randomness of the sample
> presentation that I wish to avoid.
>
> Is it possible to code into the script something to the effect:
>
> After Sample = 24, 48, and 72, then Go To BreakScreen.
> After {SPACE}, then Go To Sample 25, 49, and 73, respectively.
>
> If such is possible, can you help me learn how to write this code and then
> insert it properly into the script generated by E-Studio?
>
> Thank you,
> ~C.S.
>
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