Teachers reported significant motivational changes in 27% of the children in the growth mind-set workshop as compared with only 9% of students in the control group.

老师们报告说，参加成长型思维课的学生中，有27%的学生的积极性发生了显著的变化，而对照组中只有9%的学生的积极性有所变化。

youdao

Those in the control group not only didn't see a grade increase, they had lower grades than the grading before the study began.

对照组的学生不仅成绩没有提高，而且比研究开始前的成绩还要低。

youdao

There was, however, no significant change in the control group.

但是，没有给予营养控制的那一组的犯罪率并没有重大的改变。

youdao

"The group that had the training initially had a fifty percent greater reduction in their mortality rate and that was greater reduction than the control group, the group that didn't have the training initially."

VOA: special.2010.10.20

there were 250 kids who got nothing, who were also studied, 250 kids in the control group.

有另外250个孩子，他们什么也没得到，也列为了研究对象，250名对照组的孩子。

哈佛公开课 - 幸福课课程节选

The control group that joined no intervention actually were more luckily to advance in their workplace 20, 30 years later.

未参与干预的对照组,更有可能在二三十年后获得升职。

哈佛公开课 - 幸福课课程节选

Among the meditation group, there were 20 such occurrences, compared with 32 in the control group.

WSJ: Doctor's Orders: 20 Minutes of Meditation Twice a Day

The dozen men in the control group with no regrafting showed no return to potency.

FORBES: Some Nerve

That compares with a 7% remission rate for the patients in the control group.

WSJ: Stress-Busting Smiles