Random Loop with restricted succession

Felix1989

Hi everybody,
i am making an experiment with opensesame with 13 videos. The videos and their questions are in loop with a random order. The problem is, that although i need the random order, there is a restricted order. There are two pairs of videos, which are not allowed to be shown successive. How can i do that?
I hope you can help me.
Greetings
Felix

sebastiaan

Hi Felix,

The loop item supports pseudorandomization. For example, say that you defined a variable called video in your loop, and you don't want to repeat the same value twice, then you could specify the following constraint:

constrain video maxrep=1

For details, see:

• http://osdoc.cogsci.nl/3.1/manual/structure/loop/#pseudorandomization

Cheers,
Sebastiaan

Felix1989

Hey Sebastiaan,
thanks for your description

Best wishes
Felix