TPO61综合口语Task3阅读原文+听力原文+MP3+范文

TPO61综合口语Task3阅读原文+听力原文+MP3+范文

TPO61综合口语Task3阅读原文：

Diffusion Effect in Health Studies

When health education experts want to test the effectiveness of a program designed to improve a particular health condition, they often do a study with two groups of people. One group participates in the program, while the other does not： and the researchers compare the two groups to see if the program was effective in improving health. However, if the groups come into contact during the study, a diffusion effect may occur Members of the group participating in the program may mistakenly share information about it with members of the other group This often leads to the results of the study being useless

TPO61综合口语Task3听力原文：

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

Professor:

So 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 。。。。此处省略300字！

TPO61综合口语Task3题目：

Explain how the example from the lecture illustrates the concept of a diffusion effect.

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