This article Behavior: An Absence of Free Will, a Tendency to Cheat was emailed to me by my Metaphysics professor. Two studies were done that suggest that those who doubt free will are more likely to cheat. The article is really short.
The first study seems completely annoying, and I'm not sure I would've cheated. But the second study promised $1/right answer. If I were promised $1/right answer I think I woulda cheated as well.
This was a study, not a regent. If I were to get caught all my regents would be disqualified. But then again, I would feel guilty about lying during a study.