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I am running an mTurk study and was wondering how to exclude participants that have already done the same or similar studies.
In Qualtrics I get people to type in their mTurk id and then if it is the same as a list of ids I have in an embedded data form, then it thanks them but prevents them from doing the study again.
Can I use something similar in Inquisit? I was thinking about using the values or expressions, but does they support, say a list of numbers and check the entered ID against those numbers?
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