Is some basic prescreening data available via Prolific? Or do I have to collect it during my study?
The following data is currently available via Prolific (if you click on the "Export submission data"-button, see below): Age, sex, nationality, country of birth, ethnicity, student status, employment status.
Please note that you'll have to match the data set you get from Prolific (which contains the above prescreening information) with the data set from your survey/experimental software – it won't be automatically integrated.
You are guaranteed to get the prescreening data of filters that you apply to your study. However, for prescreening filters that you don't apply to your study there might be gaps in the prescreening data because it is optional for participants to provide this information.