Randomly selecting a set of questions

[JBeaudry]

Hi,

I am trying to produce a questionnaire that varies the number of times you are asked a question about a particular picture. I have 60 pictures and 6 questions can be asked about each picture. For 20 of the pictures I want only 1 question asked, for another 20 I want only 3 questions asked, and for the last 20 I want all 6 questions asked. I have managed to program MediaLab to do this, however, I am having trouble randomizing properly.

For example, in the three question condition: I would like to randomly choose which three of the six questions are shown, but also when those three questions are shown within the whole questionnaire (i.e., I don't want to show participants all three. questions for the same image at once).

Can MediaLab do this? Here is the questionnaire I've created. Please let me know if you have any ideas.

Thanks!