He believes students ultimately learn more and encourages them to form study groups.

他认为，学生最终会学到更多东西，他还鼓励学生们组建学习小组。

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The two groups were retested four years later, and the study compared the results with the first test.

VOA: special.2009.10.21

And one thing I would strongly suggest is to form some sort of study groups, either formally or informally.

我强烈建议大家建立一些学习小组,正式的或非正式的都可以

耶鲁公开课 - 心理学导论课程节选

There is social, which is the study of how people act in groups, how people act with other people.

还有社会心理学,主要研究人类的群体行为,如何与他人交流

耶鲁公开课 - 心理学导论课程节选

The months of parent-free parties, study groups and extra-long linens are about to begin.

FORBES: Affordable Luxuries: Dorm Rooms

That bombshell was delivered after the joint mission study groups had already completed four years of feasibility work.

BBC: Time to choose a billion-euro space mission

Many people are now reading it, with earnestness and dedication, often in reading groups modelled on Bible study groups.

NEWYORKER: The Commandments