Item randomization with linked items

Question

I am trying to figure out a way to do the following in Qualtrics. I have a list of words - lets say “word01” - “word50”Each one (01-50) is either paired with a photo or not paired with a photoI need to be able to randomly select 25 to show with a photo and 25 to show without a photoIf word01 is shown with a photo then it should not be shown without a photo (and if shown without a photo, then it should not be shown with a photo). So, I would have, for example: word01_imageword01_noneword02_imageword02_noneword03_imageword03_none… word50_imageword50_noneAnd would want to have 50 trials -- 25 with image and 25 without image - randomly presented with each word presented only once (either with or without image). I’ve played around with display logic and randomization within blocks, but it becomes rather unwieldy and I haven’t been able to guarantee a 25-25 split on the image-none factor. Any help greatly appreciated(Note: I know almost no java programming)

ahmedA · Answer

You’ll need to use Loop and Merge for this.In a block, have two questions on the same page, one corresponding toword01_image and the other forword01_none.Using randomization, show only one question.This will ensure each word is shown only once, either with or without an image.Next, add loop and merge to your block, put all your 50 words in field 1 and the corresponding 50 images in field 2. Scroll down, to randomly display choices and select the option to only show 25.This will get you to show 25 of the 50 words randomly.You should note that this setup will not ensure consistency across participants, so respondent A may be shownword01_image, but respondent B may getword01_none.

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