Submission statuses explained
When a participant signs up to take part in your study, you will immediately see their ID recorded on your submissions page. You can v...
Approvals, rejections & returns
Once a participant has completed your study, it is up to you as the researcher to review their data and decide if that participant should be approv...
Exporting Prolific demographic data
Downloading the prescreening demographic information
You can export the prescreening demographic data for your Prolific study from the submissions...
Matching data between Prolific and your external study software
When you run a study on Prolific, you will likely receive at least two spreadsheets: our demographic export, and your survey responses from your ex...
Participants are completing my study with 'NOCODE' or the wrong completion code
What does NOCODE mean?
NOCODE simply means that the participant completed the study manually and not via the completion code you provided. If some...
My participants don't match the prescreening I selected
If you have participants in your data who don't match the demographics you ask for, please first confirm that the prescreening data provided by par...
How do I report data quality concerns to you?
At Prolific we are committed to providing the highest level of data quality to our researchers. If you ever have any concerns about the level of da...
Why do I have missing data?
I have a submission on Prolific, but no associated data in my external software
There are a few reasons why submissions that are recorded in Proli...
Why do I have more participants than requested?
Prolific will only ever recruit the number of participants that you have requested when you set up your study. If you check in your submissions...
A participant took the study with an incompatible device
In order to ensure that participants only use a compatible device when taking your study, you first need to make sure that you have clearly specifi...
Can I ask a participant to re-do their submission?
On Prolific, participants can only take part in any given study once. This means that if a participant already has a submission in your study t...