Branching and Blocks


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Jin
Jin
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Group: Forum Members
Posts: 26, Visits: 103
Hi all,

I have two issues with my script that I can not figure out.

1) I am trying to get one of my survey pages to either: branch to additional questions if the first question was answered correctly, or move on to the next trial if the first question was answered incorrectly.

First Question:
<surveypage POST_TOM_S>
/ questions = [1=TOM_CAP_S; 2=TOM_Q_S]
/ nextbuttonposition = (37%, 80%)
/ finishlabel = "Click to proceed to the next video."
/ showquestionnumbers = false
/ showpagenumbers = false
/ showbackbutton = false
/ recorddata = true
/ branch = [surveypage.post_tom_qs]
</surveypage>

Follow-up question (if 1st was answered correctly):

<surveypage POST_TOM_QS>
/ questions = [1=TOM_SA; 2=TOM_SB; 3=TOM_SC; 4=TOM_SD]
/ nextbuttonposition = (37%, 80%)
/ finishlabel = "Click to proceed to the next video."
/ showquestionnumbers = false
/ showpagenumbers = false
/ showbackbutton = false
/ recorddata = true
</surveypage>

My second question is how do I prevent the same video from repeating? I have "noreplace" in the block section and in the item section, however it still sometimes repeats the same video...

<block STIM_G>
/ trials = [1-6=noreplace(PRE_GD, PRE_TOM_S, PRE_TOM_M, PRE_RD)]
</block>

*note: PRE_GD and PRE_RD contain two videos each, and PRE_TOM_S and PRE_TOM_M contain only 1 video each.

Any help would be greatly appreciated! Thank you!

Dave
Dave
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Group: Administrators
Posts: 10K, Visits: 51K
Re. #1: See https://www.millisecond.com/forums/FindPost5461.aspx

Re. #2:

<block STIM_G>
/ trials = [1-6=noreplace(PRE_GD, PRE_TOM_S, PRE_TOM_M, PRE_RD)]
</block>

means you are taking 6 samples from the four elements PRE_GD, PRE_TOM_S, PRE_TOM_M, and PRE_RD *in equal proportions*. What you actually want, however, is *two* instances of PRE_GD, *two* instances of PRE_RD, and only *one* instance each of PRE_TOM_S and PRE_TOM_M. You simply need to specify exactly that:

/ trials = [1-6=noreplace(PRE_GD, PRE_GD, PRE_TOM_S, PRE_TOM_M, PRE_RD, PRE_RD)]
GO

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