Specific Purpose
Once you have brainstormed, narrowed, and chosen your topic, you can begin to draft your specific purpose statement. Your specific purpose is a one-sentence statement that includes the objective you want to accomplish in your speech. You do not speak aloud your specific purpose during your speech; you use it to guide your researching, organizing, and writing. A good specific purpose statement is audience centered, agrees with the general purpose, addresses one main idea, and is realistic.
An audience-centered specific purpose statement usually contains an explicit reference to the audience—for example, “my audience” or “the audience.” Since a speaker may want to see if he or she effectively met his or her specific purpose, the objective should be written in such a way that it could be measured or assessed, and since a speaker actually wants to achieve his or her speech goal, the specific purpose should also be realistic. You won’t be able to teach the audience a foreign language or persuade an atheist to Christianity in a six- to nine-minute speech. The following is a good example of a good specific purpose statement for an informative speech: “By the end of my speech, the audience will be better informed about the effects the green movement has had on schools.” The statement is audience centered and matches with the general purpose by stating, “the audience will be better informed.” The speaker could also test this specific purpose by asking the audience to write down, at the end of the speech, three effects the green movement has had on schools.