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上个世纪70年代,英国一所体育运动学校的田径教师罗伯斯曾做过这样一个实验,在新入学的学生中挑选出20名学生,这20名学生,年龄、体质及在长短跑方面的成绩都大致相同,罗伯斯把他们分为第一、第二两个组,每组10个人。之后,罗伯斯又在高年级学生中选出了20人,这20人中,有10人的长短跑成绩非常出色,在各类比赛中拿过名次;另10人长短跑方面的成绩很一般。罗伯斯把成绩特别突出的那10个人编入第一组,把成绩一般的10人编入第
In the 1970s, Roberts, a track and field teacher at a sports school in the United Kingdom, conducted an experiment in which 20 students were selected from among the newly enrolled students. The 20 students, age, physique and long and short run The results are roughly the same, Roberts divided them into first and second two groups of 10 people each. Afterwards, Lobsse again selected 20 of the senior students. Among them, 10 of them outperformed the long-distance runners in all kinds of competitions and the other 10 were good at short-distance running general. Roberts put the 10 people who made outstanding achievements into the first group and the 10 people with the normal grades into the first group