My Prolific study redirects to Qualtrics. In my Qualtrics data, the same Prolific ID appears twice, with the same Session ID, but that Prolific ID only appears once on my list in Prolific. Furthermore, each person with this Prolific ID completed the study during overlapping times, beginning a few minutes apart, on machines with different screen resolutions. They reported similar background data but different ages. Only one of them matches the Prolific demographics for this Prolific ID?
Does anyone have any idea what happened here? How could two different people have the same Prolific ID and Session ID? Why doesn’t the Prolific ID show up twice in my Prolific list?