The results of the study suggested when you get rewarded based on how well you perform a task, as long as those reasons are made perfectly clear, rewards will generate that electric exuberance of intrinsic validation, and the higher the reward, the better the feeling and the more likely you will try harder in the future. On the other hand, if you are getting rewarded just for being a warm body, no matter how well you do your job, no matter what you achieve, the electric feeling is absent. In those conditions greater rewards don’t lead to more output, don’t encourage you to strive for greatness. Overall, the study suggested rewards don’t have motivational power unless they make you feel competent. Money alone doesn’t do that. With money, when you explain to yourself why you worked so hard, all you can come up with is, “to get paid.” You come to believe you are being coerced, paid off, bought out. In the absence of what the scientists called “competency feedback” there is no story to tell yourself that paints you as a badass. Quotas and overtime and hourly pay don’t offer such indications of competency. Bonuses based on a reaching a specific number of completions or reaching a quantified goal make you feel like a machine.

The Overjustification Effect, em You Are Not So Smart. Destaque meu.