Pieces of watermelon were divided into experimental and control groups.

将西瓜片分为实验组和对照组。

But for the experimental group, the lesson helped them reflect on their purpose and meaning in education.

但对于实验组的被试来说，这节课帮助他们反思了他们在教育中的目的和意义。

This allowed for a comparison between them and the experimental groups.

这允许在他们和实验组之间进行比较。

In it, social scientists randomly assigned low-income families into a control group or one of two experimental groups.

其中，社会科学家将低收入家庭随机分配到对照组或两个实验组之一。

For the experimental group, Mayo made a series of changes to their working environment.

对于实验组，梅奥对他们的工作环境做了一系列改变。

The workers in the experimental group became more productive, and absenteeism dropped.

实验组的工人工作效率更高，旷工率下降。

That meant participants were randomized into experimental or control groups, and that both participants and experimenters were blind to which experimental condition they were in.

这意味着参加者被随机分为实验组或对照组，参加者和实验者都对他们所处的实验条件一无所知。

She says, " It seems that everybody pretty much over the whole experimental sleep restriction group gained weight" .

她说，“似乎整个实验性睡眠限制组中几乎每个人的体重都增加了” 。

So, she's talking about the experimental group, the group that had their sleep limited or restricted.

所以， 她说的是实验组，即睡眠受限或限制的组。

And in the HUD experiment, sociologists compared how the measures of well-being changed for the control group, compared to those for the experimental group.

在 HUD 实验中，社会学家比较了对照组和实验组幸福感指标的变化情况。

So Mayo split the factory staff into groups: a control group who kept working under the same conditions as always, and an experimental group.

因此，梅奥将工厂员工分成几组：一组在与往常相同的条件下继续工作，另一组为实验组。

So we took a group of individuals and we assigned them to one of two experimental groups: a sleep group and a sleep deprivation group.

所以我们找了一组人，将他们分配到两个实验组中的一个：一个睡眠组和一个睡眠剥夺组。

She uses the expression " over the experimental sleep group, " she means, really, in the experimental sleep group, looking at all of the individuals inside of this experimental group.

她使用“在实验性睡眠组之上” 这个表达方式， 她的意思是，实际上，在实验性睡眠组中， 观察这个实验组内的所有个体。

She begins by saying that the whole experimental sleep restriction group, or the entire group of people who she studied and had a limited amount of sleep gained weight.

她首先说整个实验性睡眠限制组，或者说她研究过的所有睡眠时间有限的人体重都增加了。

The idea is that people in the experimental group (people who were not getting enough sleep) were " largely, " meaning mostly, uninterested in food (they didn't want to eat).

这个想法是实验组中的人（睡眠不足的人）“大部分”，意思是大部分，对食物不感兴趣（他们不想吃东西）。