Our basic strategy for raising children, teaching students, and managing workers can be summed up in six words: Do this and you'll get that. We dangle goodies (from candy bars to sales commissions) in front of people in the same way that we train the family pet. Since its publication in 1993, this groundbreaking book has persuaded countless parents, teachers, and managers that attempts to manipulate people with incentives may seem to work in the short...