Ramdomize the blocks while selecting a specific selection for a block in real time

[Zh Wu]

Hi David,

Thank you so much for your suggestions! I did try to do that but I am not 
sure how to let Eprime select a Random/Categorized BlockA and 
Categorized/Random BlockB, because I want 1/4 of participants to do BlockA 
randomly and then BlockB sequentially, 1/4 of participants to do BlockA 
sequentially and then BlockB randomly, 1/4 of participants to do BlockB 
randomly and then BlockA sequentially, and 1/4 of participants to do BlockB 
sequentially and then BlockA randomly. 

Besides, the random list is not entirely random. I had to generate a 
randomized (with restrictions) list through Python and use it for every 
participant. So essentially the Randomized list is a sequential one.

Therefore, there are four lists: categorized BlockA, 'randomized' BlockA, 
categorized BlockB, 'randomized' BlockB. I want Eprime to select one Block 
A and one Block B, the two of which has opposite selections (one 
categorized, the other 'randomized').

Is it possible to be done through Eprime? Looking forward to your reply!


On Tuesday, August 19, 2014 11:46:21 AM UTC-4, McFarlane, David wrote:
>
> You could achieve much the same effect, without 
> any inline code, by using a main List with 
> Selection Order set to Counterbalance, and Order 
> By set to Subject.  That List would have one row 
> for each of your possible scenarios, and then use 
> the Subject number to select which row to run. 
>
> ----- 
> David McFarlane 
> E-Prime training 
> online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster) 
>
> /---- 
> Stock reminder:  1) I do not work for PST.  2) 
> You may reach PST's trained staff (and other 
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> .  3) If you do get an answer from PST staff, 
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> \---- 
>
>
> At 8/17/2014 02:52 AM Sunday, KatrinH Heimann wrote: 
> >Hey, well I guess what you could do is, 
> >referring in an inline before and after the 
> >block to the attribute subjectnumber and 
> >depending on this let eprime jump to the right 
> >block using a "goto" command and a label 
> > 
> >so assuming you would have two blocks only and 
> >subjects 1 would have to do the first block first, subject 2 the second: 
> >you would need to put an inline object before 
> >the blocks saying something like 
> > 
> >if getattribute "subjectnumber" = 2 (I am not 
> >sure though anymore about how the getattribute 
> >command is implemented precisely, look it up googling) 
> >goto label1 (which you should put before block 2)Â 
> > 
> >and then after block 2:Â 
> > 
> >if getattribute "subjectnumber" = 2Â 
> >goto label2 (which you should put before block 1 after the first inline) 
> > 
> >and then after block 1: 
> >Â 
> >if getattribute "subjectnumber" = 2 (I am not 
> >sure about how the getattribute command is 
> >implemented anymore, look it up googling) 
> >goto label2 (which you should put before block 1 after the first inline) 
> > 
> >if getattribute "subjectnumber" = 2 (I am not 
> >sure about how the getattribute command is 
> >implemented anymore, look it up googling) 
> >goto label3 (which you should put at the end of the experiment) 
> > 
> >but there are a lot of inlines involved like this.... 
> >probably there is an easier way, too.... 
> > 
> >k 
> > 
> > 
> > 
> > 
> > 
> >2014-08-17 1:52 GMT+02:00 Zh Wu 
> ><<mailto:wzhm... at gmail.com <javascript:>>wzhmelly at gmail.com <javascript:>>: 
>
> >For simplicity, I just designed four different 
> >scripts, but I am still wondering whether this is doable in Eprime:) 
> > 
> >On Wednesday, August 13, 2014 7:35:34 PM UTC-4, Zh Wu wrote: 
> >I am designing an experiment with two blocks, BlockA and BlockB. 
> > 
> >I want 1/4 of participants to do BlockA randomly 
> >and then BlockB sequentially, 1/4 of 
> >participants to do BlockA sequentially and then 
> >BlockB randomly, 1/4 of participants to do 
> >BlockB randomly and then BlockA sequentially, 
> >and 1/4 of participants to do BlockB sequentially and then BlockA 
> randomly. 
> > 
> >I know how to select the blocks randomly (i.e., 
> >half participants do BlockA first and the other 
> >half BlockB first), but for the specific list, I 
> >don't know how to change the selection for a specific participant. 
> > 
> >Any help would be greatly appreciated! 
>
>

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