The main point of the book was that scientific experiments have shown that almost all people lie and cheat by a small amount (10-15%) at every opportunity they get, and the "simple model of rational crime" (with people weighing expected benefits against expected costs) totally doesn't hold in real life. The most interesting thing, though, is how people even deceive themselves so they can maintain their identity and self-image as moral and honest.
While the book was mainly describing behaviors as a result of different stimuli, it did talk about some prescriptions that do seem to help counteract cheating, such as giving reminders right at the point of temptation and actual supervision.
Decrease dishonesty: pledge, signatures, moral reminders, supervision
No effect: amount of money to be gained, probability of being caught
- Increase dishonesty: ability to rationalize, conflicts of interest, creativity, one immoral act, being depleted, others benefitting from our dishonesty, watching others behave dishonestly, culture that gives examples of dishonesty