Amount of traffic needed for successful LIVE recruitment using web or app intercepts

The golden number for LIVE recruiting (meaning no scheduled participants) is about six qualified recruits per hour. That's the minimum given the fact that if you start calling or texting participants, lots of people won't answer, a few folks unwilling to participate, etc.).

It's important to realize that this isn't just six responses per hour, but six recruits who meet your testing criteria. We also look for a response rate of 1.8% to see if a screener is working. Putting those together, your screener needs about 400 views an hour for true live recruiting to work. Of course, you can still do a mix of live and scheduled users with fewer views per hour. 

The amount of traffic on your site can vary especially if you're planning on scheduling participants to be interviewed at a later time or are using a third party tool to gather user feedback.