Their memory improved significantly, so their intelligence level as taking by tests before and after compared to control group improved significantly after a single week.

他们的记忆力有明显改善，他们的智力水平,在实验前后进行测试，再与对照组相比,在仅仅一周后就有明显改进。

哈佛公开课 - 幸福课课程节选

Like, um, in our Psych. class, we set up an experiment to study how memory works,

嗯，我们在心理班做一个实验，研究记忆是怎么运行的，

乐团怎么样？ - SpeakingMax英语口语达人