Hi everyone,

I need help with group matching in an app experiment.

Setting: Participants play up to 20 rounds (it would be fine if they play less). After each round, they’re rematched with a new group by arrival time - this is done with group_by_arrival_time. However, I can only match participants within the same round. For instance, with 7 participants, the first 6 play round 1. After 5 participants finish, I want them to be rematched with participant 7 for the next round, but this doesn't work. I suspect this is because each round is a separate subsession, restricting the matching to within that subsession.

Is there a way to circumvent this?

Thanks,
Leo