对于外部奖赏（从热情的赞扬到冷冰冰的现金）如何影响积极性和创造力，心理学家持相反的观点。
Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity.
名为“健康儿童小游戏”（见译者注1）的项目将以类似X奖（见译者注2）的方式，提供现金奖励，鼓励游戏开发者积极参与。
The new Apps For Healthy Kids programs offers cash rewards, in the style of the X-Prize, to encourage developers to participate.
有条件现金援助产生了积极影响：家庭吃上了更有营养的食物，儿童能更有规律地上学，家庭成员健康状况改善。
CCTs have demonstrated positive impacts: families eat more nutritious diets, children go to school more regularly, and families report better health.
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