Hi there,I have a specific study that I'm looking to create using randomization, but I'm not sure how to go about doing it. Here are the details:I have 20 videos that are split into 2 groups of 10. I would like participants to watch 4 videos from group 1 and 4 videos from group 2 randomly. Participants would see 8 videos in total. I would like the order of the videos they watch to be randomly chosen from each group and mixed together. So, they may see a video from group 1 and then group 2, for example until they have watched 4 from each group. After each video, they will answer a few questions. The trouble I'm having is that I don't want the groups blocked together. Currently, participants will see 4 random videos from group 1 and then 4 random videos from group 2. Ideally, I would have the videos they watch be mixed up. Thank you for any help!

For that you'll have to use branch/display logic. Store hide_a and hide_b as embedded data variables. Make a block of video+questions. So you'll have Block A1....A10 and B1....B10. Put them in a randomizer, where all 20 elements are shown. Then add a branch/display logic to each block, where it gets shown only if the relevant number is not in hide_a or hide_b. Example for video 2 of block B, it will be hide_b does not contain 2.

Combining blocks for advanced randomization

Combining blocks for advanced randomization | Experience Community

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