سوالات گفتاری ۳

TPO 61- Speaking Question 3

Listen to part of the lecture on this topic in a psychology class.

Professor:

So,ok. let’s look at an example. A researcher wanted to study ways to prevent office workers from getting stiff and tired sitting all day at their desks, so he came up with a simple program of exercises, special stretches and things. And he wanted to know if this exercise program would keep people from getting so tired during the workday, so he did a study.

He divided the workers in an office building into two groups, Group A and Group B. The researcher had Group A do this new exercise program, these special exercises and stretches every day, while Group B, they were told just to work as usual and Group A was told not to tell Group B about the exercises they were doing.

The study went on for a couple of weeks. And what happened was one day some people from Group A were talking about how the exercises they were doing were making them feel great, that they weren’t becoming so stiff and tired during the workday. And some people from Group B were sitting nearby and overheard them, and so these people in Group B decided to start doing the exercises too, so of course, the researcher wasn’t able to tell how well the exercises actually worked, because people from both groups were doing them.