The materials used to support a speaker’s ideas. The skillful use of Supporting Materials often makes the difference between a poor speech and a good one. It is also closely related to Critical Thinking. Using supporting materials is not a matter of haphazardly tossing facts and figures into your speech. You must decide which ideas need to be supported, give your audience, topics and specific purpose. You must to research to find materials that will being your ideas across clearly and creatively. And you must evaluate your supporting materials to make sure they really do back up your ideas. As you put your speeches together, you will need to make sure your supporting materials are accurate, relevant, and reliable. You will find yourself asking questions such as “Are my example representative?” “Am I using statistical measures correctly?” “Am I quoting reputable, qualified sources?” Assessing the supporting materials in your speech – as well as in your speech of your classmates—is...

Testimony from people who are recognized experts in their fields. In most speeches you will probably rely on expert testimony – testimony from people who are acknowledged authorities in their fields. Expert Testimony is especially helpful for student a speaker because students are seldom recognized as experts on their speech topics. Citing the views of people who are experts is -a good way to lend credibility to your speeches. It shows that you are not just mouthing your own opinions, but that your position is supported by people who are knowledgeable about the topic. Expert Testimony is even more important when a topic is a controversial or when the audience is skeptical about a speaker’s point of view. The following story explains how one speaker enlisted expert testimony for speech on reforming the US Social Security System: As Julia Wang did her research on how to make Social Security more equitable for younger taxpayers, she became convinced that individual citizens ...

Another type of testimony often used in speeches is Peer Testimony – opinions of people like ourselves; not prominent figures, but ordinary citizens who have firsthand experience on the topic. This kind of testimony is especially valuable because it gives a more personal viewpoint on issues then can be gained from expert testimony. It conveys the feeling, the knowledge, and the insight of people who speak with the voice of genius experience. For example, if you were speaking about the barriers faced by people with physical disabilities, you would surely include testimony from doctors and other medical authorities. But in this case, the expert testimony would be limited because it cannot communicate what it really means to have a physical disability – such as the following:  Itzhak Perlman, the word-renowned violinist whose legs are paralyzed, once said; “When you are in a wheelchair, people don’t talk to you. Perhaps they think it is contagious, or perhaps they think crippled min...