How to schedule "breaks" within a block?

[David McFarlane]

You might also do this (with no code) using a main List, run in 
Sequential order with different rows for trials and rest breaks (each 
with appropriate Weights), and have the trial rows call on a single 
nested List that contains trial info.  See the Nested List tutorial 
in Appendix C of the User's Guide that came with E-Prime, or browse 
through the Samples on the PST website.

But Paul's example looks good, so give that a try.

-- David McFarlane


At 8/7/2013 04:16 PM Wednesday, Paul Groot wrote:
>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, 
><<mailto:cshalloran at gmail.com>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.

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To unsubscribe from this group and stop receiving emails from it, send an email to e-prime+unsubscribe at googlegroups.com.
To post to this group, send email to e-prime at googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/e-prime/5203c2c9.060b320a.7694.62dbSMTPIN_ADDED_MISSING%40gmr-mx.google.com.
For more options, visit https://groups.google.com/groups/opt_out.