Skip to main content
Social Sci LibreTexts

8.2: The Topic, Purpose and Thesis

  • Page ID
  • Before any work can be done on crafting the body of your speech or presentation, you must first do some prep work—selecting a topic, formulating a purpose statement, and crafting a thesis statement. In doing so, you lay the foundation for your speech by making important decisions about what you will speak about and for what purpose you will speak. These decisions will influence and guide the entire speechwriting process, so it is wise to think carefully and critically during these beginning stages.

    I think reading is important in any form. I think a person who's trying to learn to like reading should start off reading about a topic they are interested in, or a person they are interested in. ~ Ice Cube

    Selecting a Topic

    Generally, speakers focus on one or more interrelated topics—relatively broad concepts, ideas, or problems that are relevant for particular audiences. The most common way that speakers discover topics is by simply observing what is happening around them—at their school, in their local government, or around the world. This is because all speeches are brought into existence as a result of circumstances, the multiplicity of activities going on at any one given moment in a particular place. For instance, presidential candidates craft short policy speeches that can be employed during debates, interviews, or town hall meetings during campaign seasons. When one of the candidates realizes he or she will not be successful, the particular circumstances change and the person must craft different kinds of speeches—a concession speech, for example. In other words, their campaign for presidency, and its many related events, necessitates the creation of various speeches. Rhetorical theorist Lloyd Bitzer (1968) describes this as the rhetorical situation. Put simply, the rhetorical situation is the combination of factors that make speeches and other discourse meaningful and a useful way to change the way something is. Student government leaders, for example, speak or write to other students when their campus is facing tuition or fee increases, or when students have achieved something spectacular, like lobbying campus administrators for lower student fees and succeeding. In either case, it is the situation that makes their speeches appropriate and useful for their audience of students and university employees. More importantly, they speak when there is an opportunity to change a university policy or to alter the way students think or behave in relation to a particular event on campus.

    Questions for Selecting a Topic

      What important events are occurring locally, nationally and internationally?

      What do I care about most?

      Is there someone or something I can advocate for?

      What makes me angry/happy?

      What beliefs/attitudes do I want to share?

      Is there some information the audience needs to know?

    But you need not run for president or student government in order to give a meaningful speech. On the contrary, opportunities abound for those interested in engaging speech as a tool for change. Perhaps the simplest way to find a topic is to ask yourself a few questions. See the textbox entitled “Questions for Selecting a Topic” for a few questions that will help you choose a topic.

    There are other questions you might ask yourself, too, but these should lead you to at least a few topical choices. The most important work that these questions do is to locate topics within your pre-existing sphere of knowledge and interest. David Zarefsky (2010) also identifies brainstorming as a way to develop speech topics, a strategy that can be helpful if the questions listed in the textbox did not yield an appropriate or interesting topic.

    Starting with a topic you are already interested in will likely make writing and presenting your speech a more enjoyable and meaningful experience. It means that your entire speechwriting process will focus on something you find important and that you can present this information to people who stand to benefit from your speech.

    Screen Shot 2019-07-05 at 2.47.22 PM.png

    formulating the purpose statements

    By honing in on a very specific topic, you begin the work of formulating your purpose statement. In short, a purpose statement clearly states what it is you would like to achieve. Purpose statements are especially helpful for guiding you as you prepare your speech. When deciding which main points, facts, and examples to include, you should simply ask yourself whether they are relevant not only to the topic you have selected, but also whether they support the goal you outlined in your purpose statement. The general purpose statement of a speech may be to inform, to persuade, to inspire, to celebrate, to mourn, or to entertain. Thus, it is common to frame a specific purpose statement around one of these goals. According to O’Hair, Stewart, and Rubenstein (2004), a specific purpose statement “expresses both the topic and the general speech purpose in action form and in terms of the specific objectives you hope to achieve” (p. 111). For instance, the bog turtle habitat activist might write the following specific purpose statement: At the end of my speech, the Clarke County Zoning Commission will understand that locating businesses in bog turtle habitat is a poor choice with a range of negative consequences. In short, the general purpose statement lays out the broader goal of the speech while the specific purpose statement describes precisely what the speech is intended to do.

    Success demands singleness of purpose. ~ Vince Lombardi

    Screen Shot 2019-07-05 at 2.51.36 PM.png

    Once you have answered these questions and narrowed your responses, you are still not done selecting your topic. For instance, you might have decided that you really care about conserving habitat for bog turtles. This is a very broad topic and could easily lead to a dozen different speeches. To resolve this problem, speakers must also consider the audience to whom they will speak, the scope of their presentation, and the outcome they wish to achieve. If the bog turtle enthusiast knows that she will be talking to a local zoning board and that she hopes to stop them from allowing businesses to locate on important bog turtle habitat, her topic can easily morph into something more specific. Now, her speech topic is two-pronged: bog turtle habitat and zoning rules.

    Writing the thesis statement

    The specific purpose statement is a tool that you will use as you write your talk, but it is unlikely that it will appear verbatim in your speech. Instead, you will want to convert the specific purpose statement into a thesis statement that you will share with your audience. A thesis statement encapsulates the main points of a speech in just a sentence or two, and it is designed to give audiences a quick preview of what the entire speech will be about. The thesis statement for a speech, like the thesis of a research- based essay, should be easily identifiable and ought to very succinctly sum up the main points you will present. Moreover, the thesis statement should reflect the general purpose of your speech; if your purpose is to persuade or educate, for instance, the thesis should alert audience members to this goal. The bog turtle enthusiast might prepare the following thesis statement based on her specific purpose statement: Bog turtle habitats are sensitive to a variety of activities, but land development is particularly harmful to unstable habitats. The Clarke County Zoning Commission should protect bog turtle habitats by choosing to prohibit business from locating in these habitats. In this example, the thesis statement outlines the main points and implies that the speaker will be arguing for certain zoning practices.

    Screen Shot 2019-07-05 at 2.57.06 PM.png

    writing the body of your speech

    Once you have finished the important work of deciding what your speech will be about, as well as formulating the purpose statement and crafting the thesis, you should turn your attention to writing the body of your speech. All of your main points are contained in the body, and normally this section is prepared well before you ever write the introduction or conclusion. The body of your speech will consume the largest amount of time to present; and it is the opportunity for you to elaborate on facts, evidence, examples, and opinions that support your thesis statement and do the work you have outlined in the specific purpose statement. Combining these various elements into a cohesive and compelling speech, however, is not without its difficulties, the first of which is deciding which elements to include and how they ought to be organized to best suit your purpose.

    Good design is making something intelligible and memorable. Great design is making something memorable and meaningful. ~ Dieter Rams

    The main points of any speech are the key pieces of information or arguments contained within the talk or presentation. In other words, the main points are what your audience should remember from your talk. Unlike facts or examples, main points are broad and can be encapsulated in just a sentence or two and represent the big ideas you want to convey to your audience. In general, speeches contain two to seven main points (Bower, 1990) that collectively lead to some understanding by the end of the speech. For informative speeches, main points might include historical details that advance a particular understanding of an event. For a persuasive speech, however, your main points may be your separate arguments that, when combined, help to make your case. When writing your main points, you may want to do so in parallel structure. Parallel structure refers to main points that are worded using the same structure, perhaps by starting with a common introductory clause (Verderber, Verderber, & Sellnow, 2008). Main points do not stand alone; instead, speakers must substantiate their main points by offering up examples, statistics, facts, anecdotes, or other information that contribute to the audience’s understanding of the main points. All of these things make up the sub-points, which are used to help prove the main points. This is where all of your research and supporting information comes into play.