We are tempted to cheat by the smallest things around us:
As it turns out, almost anyone will cheat when given even minor, consciously imperceptible behavioral cues. For instance, in a series of three experiments, a group of psychologists found that lighting could affect cheating. In one study, participants in a dimly-lit room cheated more often than those in a lighter one. While both groups performed equally well on a set of math problems, students in the darker room self-reported that they correctly solved, on average, four more problems than the other group—earning $1.85 more as a result, since they were being paid for each correct answer. The authors suggested that the darkness created an “illusory anonymity”: even though you aren’t actually more anonymous in the dark than in the light, you feel as though you are, making you more likely to engage in behaviors you otherwise wouldn’t. Similar effects have been observed with a variety of situational factors that don’t seem directly related to cheating. We cheat more, for instance, when we’re in a messy environment—one that has more signs of socially deviant behavior, like litter, graffiti, and other rubble.
The Dish 