有位心理学家在某地进行一次例行测验。测试前心理学家告诉同学们,这个测验很简单,中等水平的人只用所规定的五分之一的时间就能做完,到时将会响一下铃声告诉同学们,表明这个时间到了。结果,那些聪明学生在整个测验中变得非常慌张,难以胜任。事后了解这些聪明的学生发现,他们在 A psychologist performs a routine test somewhere. Psychologists told the students before the test, this test is very simple, moderate level of people only one-fifth of the prescribed time can be done, when it will ring a ring tone to tell students that this time has come. As a result, those clever students became very nervous throughout the test and could not be competent. Afterwards understand these clever students find that they are in