The researchers’ interpretation of their results is that it isn’t willpower (as conventionally understood) that distinguishes the successful children, it is the ability to strategically allocate their attention so that their actions aren’t determined by the wrong thoughts. Self-regulation, like attention, is a resource of which we have a finite amount. Further, the two resources are intimately related. Thus, if someone is tasked with controlling her impulses for some extended period of time, her performance shortly thereafter on a task requiring attention is degraded.