By smb - 7/19/2016
Hi,
I am running a study in which different conditions withing the batch are associated with different time points of completion (i.e. Time 1 vs Time 2 measurement). Thus, I don't want to randomly assign people to different groups, but I am also weary about relying on participants to enter in their own group number correctly. Is there a way to assign the group number via URL to linked with the study?
Thanks!
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By Dave - 7/19/2016
Yes, that's absolutely possible. In your web experiment's settings, select the 'URL parameter' option under "Choose how the group id should be determined:". All you need to specify is the name of the parameter (you can pick it freely in this case). For the sake of example, let's call the parameter 'condition'.
Suppose you have two timepoints / conditions as in:
<batch>
/ subjects = (1 of 2)
/ groupassignment = groupnumber
/ file = "timepoint_1.iqx"
...
</batch>
<batch>
/ subjects = (2 of 2)
/ groupassignment = groupnumber
/ file = "timepoint_2.iqx"
...
</batch>
With the query parameter set up in the settings, the URL
https://research.millisecond.com/yourusername/yourexperimentname.web?condition=1
would run the 1st condition (timepoint_1.iqx, ...), while
https://research.millisecond.com/yourusername/yourexperimentname.web?condition=2
would run the 2nd condition (timepoint_2.iqx, ...).
This can be extended to however many conditions / timepoints you need.
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By smb - 7/19/2016
Thanks so much, Dave. This was very helpful!
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