You need to use this url at the top of your IAT definition script (2nd script, the one that you don't put inside Qualtrics): '
https://cdn.jsdelivr.net/gh/baranan/minno-tasks@0.*/IAT/qualtrics/quiat9.js' (not sure where you found the url you referred to). Actually, this is the url that already exists in that script, so just keep it there. What you need to change in that script is the category labels (i.e., for category1, change the name and media properties from 'Black people' to 'Old people' and for category2 change these from 'White people' to 'Young people'), the stimuli (to the names of your stimuli, you can download age faces from
this link), and base_url to the location of the image stimuli (that is, change this link '
https://baranan.github.io/minno-tasks/images/' to the url of the place you stored your images. You can store the images where you stored your script, for example on github, see the
Use your own script file section).