Hello! We are curious when the busiest times are for Prolific in terms of both participants (U.S. participants, U.S. eastern time) & for researchers (available studies).
For example, what day of the week / time of day does Prolific have most participants simultaneously online? → Would help schedule group studies.
Also, what day of the week / time of day does Prolific have fewest studies online? → Would also help schedule studies that we might want to get quick submissions.
Thanks!
Hi Cosanlab, it’s great to have you as part of the community!
Participant Activity
Below is a graph showing submissions per hour of the day of US participants (in EST).
Researcher Activity
Below is a similar graph showing the number of studies published per hour of the day.
Given that researcher activity peaks around 10-11am, and participant activity peaks around 13:00, then perhaps publishing between those times will get you the sweet spot you’re looking for.
That being said, the average study on Prolific is completed in under 2 hours, and we generally see most studies complete within the first 24 hours. So, I wouldn’t worry too much about timings!
I hope this info helps! 
