Why Am I Seeing So Many Duplicate Participants?

If you're noticing a high number of duplicate participants in your study responses or scheduling calendar, the most likely reason is that you're reusing an existing study that already collected responses in the past. When a participant completes a study and then fills it out again later, they will be automatically flagged as a duplicate if their original submission is tied to the same study.

To avoid this and make your recruiting process easier, we recommend creating a new study each time you launch a new round of research. This helps prevent previously paid or screened participants from appearing again, keeping your responses list focused and clean.

If you do need to reuse a study, you can still manage the duplicates from the Responses page. Go to Filter › Current Status, switch it to "is not", and select Duplicate. That leaves just the new and eligible participants for your project.

Looking to let a participant back in instead of filtering them out? That is a different setup. See our cookie settings article for study access, and Duplicate prevention settings for scheduling.