I'm the admin for Prolific Participants on Facebook. Starting this summer, every post was, "Why can't I catch any work." We found out that on July 24th, a woman posted a Tik Tok about Prolific and it went viral with over 4 million views. More than 30,000 new participants signed up, most are women in their early 20s.

The researchers freaked out because it skewed the data. Prolific had to refund some that were depending on male participation. They offered free quals for a while and also the ability to exclude people that signed up July 24th and later. They have also stopped opening up to new participants and are wait listing them.

If you're a male, you may have a good chance to cash in on the free quals, while they last.