> The fact that less than one percent of the people who were invited to the study completed the experiment underscores that one should be cautious in generalizi

> The fact that less than one percent of the people who were invited to the study completed the experiment underscores that one should be cautious in generalizing results outside our sample. Most of this sample selection is driven by the fact that only a few percent of people click on research study invitations or social media ad The self selection bias in these ad based invitation studies is just out of whack. I suspect that those who participate were already considering quitting.