丑小鸭变成白天鹅似乎只是一个童话故事,但美国心理学家罗森塔尔却通过实验让它变成了现实。1966年,罗森塔尔在一所乡村小学做了一个实验。实验并不复杂,他给各年级的学生做了语言能力和推理能力的测验,测完之后,他没有看测验结果,而是随机地选出了20%的学生,告诉他们的老师说? The transformation of the ugly duckling into a white swan seems to be just a fairy tale, but the American psychologist Rosenthal made it a reality through experiments. In 1966, Rosenthal made an experiment in a rural elementary school. The experiment was not complicated. He gave the students of all grades a test of their language ability and reasoning ability. After the test, he did not read the test results. Instead, he randomly selected 20% of the students and told their teachers.