Dear Siddika,
If you want to replace the face stimuli used in the IAT, you need to upload your own stimuli to a repository (e.g., the same repository you used to save your IAT script).
Then, update your script to use the new stimuli names, and the new url to the location of your stimuli:
stimulusMedia : [ //change these image names to your image names (also for White faces)
{image : 'black1.jpg'},
{image : 'black2.jpg'},
{image : 'black3.jpg'},
{image : 'black4.jpg'},
{image : 'black5.jpg'},
{image : 'black6.jpg'}
]
base_url : {//Where are your images at?
image : 'https://baranan.github.io/minno-tasks/images/' // change this to the new url
},
I hope that helps.
Best,
Mayan