I was approved for a study, but was told it's full. What happened?

For many studies, we invite more candidates than there are available spots to account for the likelihood that some participants will be unavailable. To keep things fair, we send scheduling emails to all approved candidates at the same time - and spots fill up fast!

We know this can be frustrating. To give yourself the best chance of booking a spot, regularly check your inbox for scheduling emails and sign up as soon as you can.