Hi everyone,
I want to conduct a study on the effect of clothing color on perception using photographs of people. For this, I have chosen 12 different people in 4 different color conditions ( = a total of 48 pictures). I want every participant to randomly see all 12 people but only in one color condition. For instance, I have red, blue, green and yellow. I want to make sure that participants see the 12 different faces but every face just once in either red, blue, green or yellow. How do I use the randomize tool in the Survey Flow option to ensure all 48 pictures are rated by the same amount of participants while making sure every participant is only assigned 12 of them and making sure one person is only seen in one color condition every time?

Thank you so much in advance!
Celine