I am recruiting participants from Prolific Academic (similar to MTurk) and I need to be able to assign each participant with a 2nd specific participant ID code.
The first participant ID number will be automatically provided through the Prolific website, which will be necessary so I can pay the participants. The second, non-prolific ID number is required so the participants can complete a task on a different platform in the middle of the study. This non-qualtrics platform will only allow participants to enter ID numbers that I have already added previously as a "possible ID number".
Therefore, I need to retain the original prolific ID number and assign nonrandom ID #s. Thanks for your help.
Question
How do I assign second, non-randomized IDs to Prolific Academic participants?
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