Thesis Statement

Your thesis statement is a one-sentence summary of the central idea of your speech that you either explain or defend. You would explain the thesis statement for an informative speech, since these speeches are based on factual, objective material. You would defend your thesis statement for a persuasive speech, because these speeches are argumentative and your thesis should clearly indicate a stance on a particular issue. In order to make sure your thesis is argumentative and your stance clear, it is helpful to start your thesis with the words “I believe.” When starting to work on a persuasive speech, it can also be beneficial to write out a counterargument to your thesis to ensure that it is arguable.

The thesis statement is different from the specific purpose in two main ways. First, the thesis statement is content centered, while the specific purpose statement is audience centered. Second, the thesis statement is incorporated into the spoken portion of your speech, while the specific purpose serves as a guide for your research and writing and an objective that you can measure. A good thesis statement is declarative, agrees with the general and specific purposes, and focuses and narrows your topic. Although you will likely end up revising and refining your thesis as you research and write, it is good to draft a thesis statement soon after drafting a specific purpose to help guide your progress. As with the specific purpose statement, your thesis helps ensure that your research, organizing, and writing are focused so you don’t end up wasting time with irrelevant materials. Keep your specific purpose and thesis statement handy (drafting them at the top of your working outline is a good idea) so you can reference them often. The following examples show how a general purpose, specific purpose, and thesis statement match up with a topic area:

  1. Topic: My Craziest Adventure

General purpose: To Entertain

Specific purpose: By the end of my speech, the audience will appreciate the lasting memories that result from an eighteen-year-old visiting New Orleans for the first time.

Thesis statement: New Orleans offers young tourists many opportunities for fun and excitement.

  1. Topic: Renewable Energy

General purpose: To Inform

Specific purpose: By the end of my speech, the audience will be able to explain the basics of using biomass as fuel.

Thesis statement: Biomass is a renewable resource that releases gases that can be used for fuel.

  1. Topic: Privacy Rights

General purpose: To Persuade

Specific purpose: By the end of my speech, my audience will believe that parents should not be able to use tracking devices to monitor their teenage child’s activities.

Thesis statement: I believe that it is a violation of a child’s privacy to be electronically monitored by his or her parents.


  • Getting integrated: Public speaking training builds transferrable skills that are useful in your college classes, career, personal relationships, and civic life.
  • Demographic, psychographic, and situational audience analysis help tailor your speech content to your audience.
  • The general and specific purposes of your speech are based on the speaking occasion and include the objective you would like to accomplish by the end of your speech. Determining these early in the speech-making process will help focus your research and writing.
  • Brainstorm to identify topics that fit within your interests, and then narrow your topic based on audience analysis and the guidelines provided.
  • A thesis statement summarizes the central idea of your speech and will be explained or defended using supporting material. Referencing your thesis statement often will help ensure that your speech is coherent.


  1. Getting integrated: Why do some people dread public speaking or just want to avoid it? Identify some potential benefits of public speaking in academic, professional, personal, and civic contexts that might make people see public speaking in a different light.
  2. Conduct some preliminary audience analysis of your class and your classroom. What are some demographics that might be useful for you to consider? What might be some attitudes, beliefs, and values people have that might be relevant to your speech topics? What situational factors might you want to consider before giving your speech?
  3. Pay attention to the news (in the paper, on the Internet, television, or radio). Identify two informative and two persuasive speech topics that are based in current events.

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