Small Groups And Cheating

I recently had to be out of town during an exam day, so I took the time-honored step of having a grad student proctor the exam. She caught three students cheating (they all got zeros on the exam, BTW). Then this comes out, from David Tufte at Voluntary Exchange):

New Scientist reports that cooperation among members of small groups is strongly encouraged not just by punishing cheaters but also by punishing those who don't punish cheaters. Even better, the reward centers in our brains appear to be stimulated by both actions.

Via Mahalanobis.

Click here for the whole article.

Unfortunately, I haven't found this to be true in the classroom.