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How do I set up (start) a survey using a randomized incomplete block design?

wjolley
wjolley VermontCommunity Member, Qualtrics Brand Admin Qubie ✭
edited June 23 in Survey Platform

None of my searches offered answers to this question.

Best Answer

Answers

  • PeeyushBansal
    PeeyushBansal IndiaCommunity Member, XMPN Member, Qualtrics Brand Admin Wizard ✭✭✭✭✭

    If you are looking to randomize blocks in survey, than in survey flow you can add Randomizer element and place all blocks under this that you want to randomize.

  • wjolley
    wjolley VermontCommunity Member, Qualtrics Brand Admin Qubie ✭

    Dear bansalpeeyush29,

    Thank you very much for your reply. I do want to randomize concepts within a block, but not randomize blocks within a single survey. I have attached a fuller description of the research project. I look forward to your ideas and recommendations.

    Regards,

    Bill

  • PeeyushBansal
    PeeyushBansal IndiaCommunity Member, XMPN Member, Qualtrics Brand Admin Wizard ✭✭✭✭✭

    Yes you can use loop and merge here and randomly select 5 of your concepts out of all.

  • wjolley
    wjolley VermontCommunity Member, Qualtrics Brand Admin Qubie ✭

    So loop will create X number of unique blocks/surveys of five randomly selected concepts from the 15 and randomization will randomly order the concepts within a block/survey so that it is as if all respondents evaluated all concepts with a n=30 for a single concept - right?

  • wjolley
    wjolley VermontCommunity Member, Qualtrics Brand Admin Qubie ✭

    Thanks for these pages - they were very helpful. If I am understanding these correctly in Qualtrics "blocks" are sets of questions that can be used for "looping and merging" in a survey. My reference to "blocks" are a subset of concepts (or any treatment stimuli) selected based on an experimental design. My survey questions are the same for all respondents and all concepts in a fixed order. So if Qualtrics does not select stimuli based on an experimental design to structure a set of surveys, the stimulus sets would have to be determined ahead and “piped in” from the design matrix for which the “block” of set questions would be “looped and merged.” As long as the design-determined number of individual surveys were run based on the “concept blocks,” would this work?