Millisecond Forums

Hi. I have an experiment where, among other things, participants go through the flow in the screenshot below. They're randomized into one of two group (group one gets the "control manipulation" and group 3 gets the "treatment manipulation". Both groups then do the dualtaskadaptivenback.iqx). 



When creating the WebScript I answered the question "Choose how the group ID should be determined" by selecting "random selection with replacement". Then for "Enter the total number of groups (if any) in the experiment" I entered 2.

My problem/confusion: In the data files for manipulationcontrolgroup.iqx I see participants with "1"s and "2"s in the group column, not just 1s as the screenshot indicates would happen.. This is also the case for the manipulationtreatmentgroup.iqx. What is happening here? I was under the impression that all participants in group 1 would go into the manipulationcontrolgroup.iqx and all participants in group 2 would be in manipulationtreatmentgroup.iqx. For clarification, participants come to Inquisit from an external participant pool (sonasystems) so their subjectID is predetermined.

If I look in the datafiles I am able to cross reference who went into what group based on the subject's but that is significantly more work than a simple 1 or 2 for group identification. Is there something simple I'm missing?

Thanks