https://www.qualtrics.com/community/discussion/comment/20740#Comment_20740Hi TomG ,
I am trying to do this (except I have 20 statements and want to split up into 4 matrix questions), but I am getting repeated statements in the subsequent questions.
Below is the Advanced Randomization for all four matrix questions. The "Random Subset" box contains all 20 statements.
Matrix question 1 looks like below:
Matrix questions 2, 3, and 4 look like below:
When I do the Preview, these are the four matrices I got...


In this instance, I got 4 duplicates: relaxed, dominant, untidy, provocative.
I think I am getting duplicates because I am selecting "Not Displayed Statements" from always the same previous question (i.e. matrix question 1), but I don't see a way to select all previous questions...
Can you please elaborate on how to do this without getting duplicates?
Thank you sooo much in advance!
All the questions need to be on separate pages and you need to display the undisplayed questions from the previous questions: Q2 undisplayed from Q1, Q3 undisplayed from Q2, Q4 undisplayed from Q3.
These two changes seems to do the trick, as long as I don't use the Back Button. I ran the survey a few times using the Back Button. Two times I got duplicates...
Can I not have the Back Button enabled when doing randomization of options across various pages? I wish I could...
If the answer is "no, I cannot have the Back Button enabled (because you get duplicates)", please ignore the rest of my message.
If the answer is "yes, you should be able to have the Back Button enabled (and not get duplicates)", please read on.
The text boxes (from left to right) in the spreadsheet below show the steps I followed that yielded duplicate options...
PICTURE ONE: Q3 before hitting Back Button
PICTURE TWO: Q3 after hitting Back Button, and Forward Button (from Q2)
If I should should be able to have the Back Button enabled when doing randomization of options across pages (and not have duplicates), what could I be doing wrong?
I wish I could have the Back Button enabled without getting duplicate options in the matrices...
Thanks in advance!!
https://www.qualtrics.com/community/discussion/comment/30927#Comment_30927The simplest solution is to use JS to hide the previous button on the pages with carry forward.
https://www.qualtrics.com/community/discussion/comment/30932#Comment_30932Thank you for the suggestion. But I would actually like to have the Back Button enabled specifically in the pages that have Carry Forward so that participants can revise their answers in the matrix if they need to...
I was hoping that on pages that use Carry Forward and Randomization that all the pages would somehow be laid out right when the survey is opened and not change even if the participant moves back and forth through the pages (with the Back Button and Forward Button)... but it seems this is not possible...?
So then, is it not possible to have the Back Button enabled on pages that have Carry Forward because it would mess up the Randomization of statements?
https://www.qualtrics.com/community/discussion/comment/30994#Comment_30994Two potential solutions that will involve more work to set up:
- I haven't tried this, but I'm pretty sure it would probably work. Instead of carryforward use display logic on each of your statements to make sure they haven't been displayed in the previous questions and use advanced randomization to show the desired number of statements in each question (except the last question where only the un-displayed statements will show anyway).
- I haven't tried this either, but I know it would work. Use a webservice or JavaScript to assign embedded variables specifying which question each statement should randomly be displayed in (e.g., 'statement1' would be assigned a value of 1, 2, 3, or 4, and so forth) then use those embedded variables in statement display logic on each question.
https://www.qualtrics.com/community/discussion/comment/30998#Comment_30998Hi Tom, thank you for the suggestions! I actually ran out of time and needed to send out the survey. So I didn't get a chance to try these out, and sent out the survey without the Back Button. However, I think your suggestions might be useful for others in the future, so thank you.
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