It is no longer online, but very recently, a webpage of the University of Maryland displayed a final exam for students. It offered extra credit—for free! There was no question over some arcane piece of information. A student could choose either 2 or 6 points of extra credit. But like the prisoner in the famous logical dilemma, the student faces a negative consequence if classmates are equally greedy.
@shaunhin I am that professor. Glad you enjoyed it.— Dylan Selterman (@SelterMosby) July 9, 2015
Dr. Dylan Selterman, professor of psychology, is claiming credit for the question. And what were the results?
@shaunhin It was about 20% of the class that chose 6 points, though after you posted the link a lot of other internet randos filled it out.— Dylan Selterman (@SelterMosby) July 9, 2015