What is a bonus payment?
Bonus payments are additional payments researchers can make beyond the normal payment for a study submission.
Sometimes researchers use them for subsequent parts of a longitudinal / multi-part study, where the format of the study is such that those subsequent parts cannot be run in the usual way.
Or, in some cases, bonus payments are made to offer additional rewards, or to make partial payments to participants if a study wasn't fully completed but the researcher still wants to offer a reward.
What should I do if I haven't received my bonus?
If you haven't received a bonus payment from a researcher, you can reach out to them using our internal messaging system. Read more about how to do this here: How can I contact a researcher?