Reviewing 128 studies on the effects of rewards Deci et al. (1999, p. 658) concluded that.

回顾128项奖励的作用的研究Deci et al . (1999 . p . 658)，得出一下结论。

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Facing the pressures of life, he often doubts that deci sion made by him self 25 years ago.

面对生活的压力，他常常怀疑自己25年前的那个决定。

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On the basis of the above concepts, preference distance axioms for group deci-sion -making with order preference a re set up.

在此基础上，建立了序数偏爱下的群体决策公理，即偏爱距离公理。

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Intrinsic and extrinsic motivations are well established terms in the literature on the psychology of motivation, primarily from a set of theories called Self-Determination Theory, which was developed by Edward Deci and Richard Ryan at the University of Rochester.

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On the other hand, students who are motivated to learn have higher achievement, show better understanding of the concepts they are taught, are more satisfied with school, and have lower dropout rates, according to a variety of studies reviewed by Edward Deci and colleagues.

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