心理学家迪西(Deci,E.L)做过一个实验,让一些学生解答妙趣横生的智力难题。开始时对所有学生都不奖励,接着把他们分成两组,其中一组学生每解答完一个智力难题,就给予一定的奖励,另一组学生不给任何奖励,然后在两组学生休息或自由活动时间里,实验者进行观察,发现尽管奖励组学生在有奖励时解答十分努力,但自由活动时 Psychologist Deci (E.L.) did an experiment in which some students answered the fun puzzle of intelligence. At the beginning of all students are not rewarded, then they are divided into two groups, one group of students each answer a mental problem, give some reward, another group of students do not give any reward, and then two groups of students rest or freedom During the activity time, the experimenter observed and found that while the rewards students answered very hard when they were rewarded,