Hi, I'm trying to add pictures to help respondents visualize in my choice experiment. The pictures should add no unique information because they are pictorial representations of attribute combinations.
The pictures are based on 3 attributes that each have 2 levels, so there are 8 pictures in total, and they should appear with the relevant attribute levels.
My thought process was to add the pictures in as attributes and constrain each one to only appear with the appropriate levels of the other attributes, but this seems potentially problematic, or at least inefficient.