Batch file contains random group assignment, how do I determine which group was assigned?


Batch file contains random group assignment, how do I determine which...
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nanaks
nanaks
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I've run a study on Inquisit Web (with no issues) using the batch command in the registered script, see below.

<batch>
/ subjects = (1 of 2)
/ groupassignment = random
/ file = "consentexp.exp"
/ file = "choiceexp.exp"
/ file = "jugexp.exp"
/ file = "demoexp.exp"
</batch>

<batch>
/ subjects = (2 of 2)
/ groupassignment = random
/ file = "consentexp.exp"
/ file = "jugexp.exp"
/ file = "choiceexp.exp"
/ file = "demoexp.exp"

I need to determine which group each participant has been assigned to in order to determine if there is any effect of order on my dependent variable. In jugexp.exp, I included the following:

<data>
/ separatefiles = true
/ columns = [build, computer.platform, date, time, subject, group, blockcode, blocknum, trialcode, trialnum, [...], script.elapsedtime, computer.ipaddress.1, computer.macaddress.1, variables.currentgroupnumber]

I was expecting that either the group item or variables.currentgroupnumber item would tell me whether the participant had been randomly assigned to group 1, or group 2, but in my output file, the group number is unique to each participant, and the variables.currentgroupnumber is "0" for every line.

Any help in determining which group the participant has been assigned to when using "/ groupassignment = random"

I realize that I could assign by groupnumber (split by even/odd), but there should be a way to determine group assignment with the random option as well, correct?

Thanks in advance.



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