Although a persuasive speech involves information—even as much as an informative speech—the key difference is that a persuasive speech is designed for “creating, reinforcing, or changing people’s beliefs or actions” (Lucas, 2015. p. 306). A persuasive speech makes something happen. In other words, it performs a job.

Traditional Views of Persuasion

In the fourth century BCE, the classic philosopher Aristotle took up the study of the public practices of the ruling class in Athenian society. For two years he observed the rhetoric (the art of persuasion) of the men who spoke in the assembly and the courts. In the end, he developed a theory about persuasiveness that has come down to us in history as a treatise called Rhetoric. Among his many ideas was the identification of three elements essential to persuasion: ethos, logos, and pathos. In short, they mean credibility, reasonability, and emotion.

Ethos

Ethos has come to mean speaker character and credentials. It is the element that establishes the audience’s trust in you as a speaker. A speaker’s credibility is based on who the speaker is and what they know: experience, education, expertise, and background. If you’re delivering a persuasive speech about adopting a pet from a shelter and you have raised several shelter dogs, then you have credibility through experience and should share that fact about yourself with the audience to enhance their trust in your persuasive argument. Another way to establish your credibility is through research sources. You may not be an expert in climate change, but if you were giving a persuasive speech about it, you can cite reliable authoritative sources.

The word ethos looks very much like the word “ethics,” and there are many close parallels to the trust an audience has in a speaker and their honesty and ethical stance. In terms of ethics, it goes without saying that your speech will be truthful.

In addition to expertise and truthfulness is your personal involvement in the topic. Ideally you have chosen the topic because it means something to you personally. Audiences will have more trust in you if they feel you have something as stake or something personal in the subject. For example, perhaps your speech is designed to motivate audience members to take action against bullying in schools, and it’s important to you because you work with the Boys and Girls Club organization and have seen how anti-bullying programs can have positive results. Sharing your own involvement and commitment is key to establishing your credibility on this topic.

Logos

Logos is the second key element in Aristotle’s theory of rhetoric. Related to our word “logic,” the Greek term logos in persuasion means presenting ideas that appeal to logic or reason. Logos in a speech pertain to arguments that the audience would find acceptable. Imagine a speech, for example, which has the goal of persuading an audience to adopt healthier eating habits. Would the speech be effective if the arguments focused on how expensive organic foods are? Of course not.

Logic and reason are persuasive not only as matters of content. Logos pertains to organization, as well. An effective persuasive speech presents arguments in an organized fashion.

Pathos

In words like “empathy,” “sympathy,” and “compassion” we see the root word behind the Greek word pathos. Pathos, for Aristotle, meant exciting emotions such as anger, joy, hate, love, and desire to persuade the audience of the rightness of a proposition. In a positive sense, appealing to the emotions of the audience is a highly effective persuasive tool. In the earlier example of a speech designed to encourage an audience to take action against bullying in schools, including a touching story about a student experiencing bullying would make the audience more likely to support your call for action.

However, we recognize that pathos can be used in a negative way. Emotional appeals that use anger, guilt, hatred, inflammatory language like name-calling, or that try to frighten the audience with horrible images, are counter-productive and even unethical. They might incite emotion in the audience, but they are poor uses of pathos.

One negative emotion used frequently by persuasive speakers is fear. Candidates for political office, for example, often try to provoke fear to move us to vote for them. Intense, over-the-top fear appeals, based on factual falsehoods or cherry-picking, and/or including shocking photos, are not ethical and are often dismissed by discerning audience members. Appealing to the emotion of fear can be ethical if it’s managed carefully. This means being strictly factual and avoiding extremes.

Persuasion and the Audience

It makes sense that if a speaker wants to affect the audience’s beliefs or actions, then the speaker must be perfectly clear about their expectations. If you were listening to a persuasive speech call for your audience to support animals, wouldn’t you want to know exactly what “support” the speaker was talking about? Giving money to charities? Volunteering at an animal shelter? Writing state legislators and urging them to change laws? Your job as a persuasive speaker is to be clear about what you want to create, reinforce, or change in your audience.

For your speech to have persuasive power, you must also consider your audience and choose a goal that is feasible for them. Persuasion isn’t an on/off switch. It’s more like a thermometer. Skillful persuasive speakers respect and identify a persuasive goal that is calibrated to the audience. Think of persuasion as a continuum or line going both directions. At one end is strong disagreement. At the other end is strong agreement. Your audience members, either as a group or individually, are sitting somewhere on that line in relation to your central idea statement, or what we are going to call a proposition in this chapter.

For example, your speech proposition might be something like “The main cause of climate change is human activity.” You are claiming that climate change is due to the harmful things that humans have done to the environment. To be an effective persuasive speaker, one of your first jobs after choosing this topic would be to determine where your audience “sits” on the continuum.

+ 3 means strongly agree to the point of making lifestyle choices to lessen climate change (such as riding a bike instead of driving a car, recycling, eating certain kinds of foods, and advocating for government policy changes).

+ 2 means agree but not to the point of acting upon it or only acting on it in small ways.

+ 1 as mildly agrees with your proposition; that is, they think it’s probably true, but the issue doesn’t affect them personally.

0 means neutral, no opinion, or feeling too uninformed to decide.

– 1 means mildly opposed to the proposition but willing to listen to those with whom they disagree.

– 2 means disagreement to the point of dismissing the idea pretty quickly.

– 3 means strong opposition to the point that the concept of climate change itself isn’t even listened to or acknowledged as a valid subject.

Since everyone in the audience is somewhere on this line or continuum, you can accept the fact that any movement toward +3 or to the right is a win. Trying to change an audience from -3 (strong disagreement) to +3 (strong agreement) in a single speech would be quite impossible. When you understand this, you can make strategic choices about the content of your speech.

In this example, if you knew that most of the audience was at -2 or -3, your speech could focus on opening their minds to the possibility of climate change and provide the science behind human causes. On the other hand, if you knew your audience was at +1 or +2, you could focus on urging them to take bold steps, like giving up their gasoline-powered vehicles.

A proposition is assumed to be in some way controversial, or a “stretch” for the audience. Some people in the audience will disagree with your proposition or at least have no opinion; they are not “on your side.”

There will be those in the audience who disagree with your proposition but who are willing to listen. Some members of the audience may already agree with you, although they don’t know why. Both groups could be called the target audience. At the same time, another cluster of your audience may be extremely opposed to your position to the degree that they probably will not give you a fair hearing. They probably can’t be persuaded. Focus on your target audience, they are the one you can persuade.

Why is Persuasion Hard?

Persuasion is hard mainly because we have a bias against change. We go out of our way to protect our beliefs, attitudes, and values. We selectively expose ourselves to messages that we already agree with, rather than those that confront or challenge us. We find it uncomfortable to be confronted with conflicting information or viewpoints.

Additionally, during a persuasive speech the audience members are holding a mental dialogue with the speaker or at least the speaker’s content. The processes that the human mind goes through while it listens to a persuasive message is like a silent conversation. In their minds, audience members are producing doubts or reservations about your proposal. If we could listen in on one of these conversations, it might go something like this:

Speaker: Switching to a plant-based diet is the best action you can take to support a reduction in the CO-2 emissions harming the climate.

Audience Member Mind: Yeah, I hear what you’re saying, but eating like that won’t give me enough protein.

The audience member has a doubt or reservation about the speaker’s proposal. We can call these doubts “yeah, buts” because the audience members are thinking, “Yeah, but what about—?”  It’s a skill of good persuasion speechwriting to anticipate reservations.

Solutions to the Difficulty of Persuasion

With these reasons for the resistance audience members have to persuasion, what is a speaker to do? Here are some strategies.

First, choose a feasible goal for the persuasive action you want the audience to take. Going back to our continuum, trying to move an audience from -3 to +2 or +3 is too big a move. Having reasonable persuasive goals is the first way to meet resistance. Even moving someone from -3 to -2 is progress, and over time these small shifts can eventually result in a significant amount of persuasion.

Secondly, as speakers we must address reservations. While speechwriters aren’t mind-readers, we can easily imagine reservations about our proposition and build a response to those reservations into the speech. Using the example above, a speaker might say:

Switching to a plant-based diet is the best action you can take to support a reduction in the CO-2 emissions harming the climate. I urge all of you to consider this important dietary change. Perhaps you are thinking that a plant-based diet won’t provide enough protein. That is a common concern. Nutritionists at the website Forks Over Knives explain how the staples of a PB diet—whole grains, legumes, and nuts—provide ample protein.

Here, the speaker acknowledges a valid reservation and then offers a rebuttal. This is called a two-tailed argument. The speaker articulates a possible argument against their proposition and then refutes it.

The third strategy is to keep in mind that since you are asking the audience to change something, they must view the benefits of the change as worth the stress of the change. In effect, audiences want to know: “What’s in it for me?” (WIIFM). As a speaker, you should give thought to that question and in your speech address the benefit, advantage, or improvement that the audience will gain by taking the action you propose.

Structure of a Persuasive Speech

A persuasive speech shares with an informational speech the same four elements for a strongly structured speech: introduction, body, conclusion, and connectors. Like informative speeches, preparation requires thoughtful attention to the given circumstances of the speech occasion, as well as audience analysis in terms of demographic and psychographic features. That said, there are some elements unique to a persuasive speech.

General and Specific Purpose

General Purpose: To Persuade

Specific Purpose: To motivate my audience of campus administrators to provide LGBTQ+ safe spaces on campus.

This looks familiar up to this point. The general purpose is one of the three broad speech goals (to instruct, to persuade, to inspire or entertain). The specific purpose statement follows a clear T.W.A.C. pattern:

To + Word: To convince

Audience: campus administrators

Content: LGBTQ+ safe spaces

What is unique to persuasive speeches is what comes next, the proposition.

Propositions

Informational speeches require a thesis. This is the central idea of the speech; its “takeaway.” Persuasive speeches equally require a strong focus on the main idea, but we call this something else: a proposition. A proposition is a statement that expresses a judgement or opinion about which you want audience in agreement. Remember that propositions must be something that can be argued. To say, “The earth is round” isn’t a proposition. “The earth is flat” is a proposition.

• Converting to solar energy saves homeowners money.
• A vegan diet is the most ethical way to eat.
• Universities should provide on-line learning options for all classes.
• The Constitution’s Second Amendment does not include possession of automatic weapons for private use.

Like a thesis statement for an informative speech, a proposition statement is best when it not only clearly states the judgment or opinion for which you seek audience agreement, but also provides a succinct preview of the reasons for that judgement.

Universities should provide LGBTQ+ safe spaces on campus to promote visibility, build community, and protect well-being for LGBTQ+ students and their allies.

Types of Propositions

If you take a closer look at the propositions above, you’ll notice that they suggest several types of persuasion. In fact, there are several broad categories of propositions, determined by their primary goal. These are: a) propositions of fact, b) propositions of value, c) propositions of policy, and d) propositions of definition.

Proposition of Fact

Speeches with this type of proposition attempt to establish the truth of a statement. The core of the proposition isn’t whether something is morally right or wrong, only that a statement is supported by evidence or not. These propositions are not facts such as “the chemical symbol for water is H20.” Rather, propositions of fact are statements over which people disagree and there is evidence on both sides. Some examples of propositions of fact are:

• Converting to solar energy saves homeowners money.
• Experiments using animals are essential to the development of many life-saving medical procedures.
• Climate change has been caused by human activity.

Notice that in none of these are any values—good or bad—mentioned. The point of these propositions is to prove with evidence the truth of a statement.

Proposition of Value

Propositions of fact have the primary purpose of arguing that something exists in a particular way. Propositions of value, on the other hand, have as their primary purpose to argue that one thing is better than another. When the proposition has a word such as “good,” “bad,” “best,” “worst,” “just,” “unjust,” “ethical,” “unethical,” “moral,” “immoral,” “beneficial,” “harmful,” “advantageous,” or “disadvantageous,” then it’s a proposition of value. Some examples include:

• Hybrid cars are the best form of automobile transportation available today.
• Mascots that involve Native American names, characters, and symbols are unjust.
• A vegan diet is the most ethical way to eat.

Propositions of value require a first step: defining the “value” word. If you are trying to convince your audience that something is “unjust,” you will have to make clear what you mean by that term. For different people, “best” might mean “safest,” “least expensive,” “most environmentally responsible,” “stylish,” “powerful,” or “prestigious.” Obviously, in the case of the first proposition above, it means “environmentally responsible.” It’s the first job of the speaker, after introducing the speech and stating the proposition, to explain what “best form of automobile transportation” means. Then the proposition would be defended with separate arguments.

Proposition of Policy

These propositions are easy to identify because they almost always have the word “should” in them. These propositions call for a change in policy or practice (including those in a government, community, or school), or they can call for the audience to adopt a certain behavior.

• The federal government should act to ensure clean water standards for all citizens.
• Universities should eliminate attendance requirements.
• States should lower taxes on food.

The proposition determines the approach to the speech, especially the organization. The exact phrasing of the proposition should be carefully done to be reasonable, positive, and appropriate for the context and audience.

Propositions of Definition

Propositions of definitions argue that a word, phrase, or concept has a particular meaning. Lawyers, legislators, and scholars often write briefs, present persuasive speeches, or compose articles to define terms that are vital to defendants, citizens, or disciplines. Some examples might be:

• The Second Amendment to the Constitution does not include possession of automatic weapons for private use.
• Alcoholism should be considered a disease because…
• Thomas Jefferson’s definition of inalienable rights did not include a right to privacy.

In each of these examples, the proposition is that the definition of these things needs to be changed or viewed differently, but the audience isn’t asked to change an attitude or action.

These are not strict categories. A proposition of value most likely contains elements of facts and definitions, for example. However, identifying the primary category for a persuasive speech focuses the speaker on the ultimate purpose of the speech.

Pro-Arguments

Once you know your proposition, the next step is to make your case for your judgement or opinion through clear and distinct points. These are the main points of the body of your persuasive speech. We call these the “pro” or “for” arguments. You should present at least three distinct arguments in favor of your proposition. Expanding on the example above,

General Purpose: To Persuade

Specific Purpose:  To motivate my audience of campus administrators to provide LGBTQ+ safe spaces on campus.

Proposition: Universities should provide LGBTQ+ safe spaces on campus in order to promote visibility, build community, and protect well-being for LGBTQ+ students and their allies.

Three pro-arguments for the proposition are:

Pro-Argument #1: Creating a safe space makes LGBTQ+ community more visible and central to campus life, instead of marginalized.

Pro-Argument #2: Safe spaces create a place where LGBTQ+ and their allies learn to build networks, friendship, and support circles.

Pro-Argument #3: With a safe and centralized space bringing together this community, instances of bias or harassment can be brought to counselors, making for a safer community.

Two-Tailed Arguments

There is one more crucial element following pro-arguments. These are unique to persuasive speeches. As discussed above, it’s essential to anticipate and address audience reservations about your propositions. These are the two-tailed arguments that articulate the reservation and then address it or refute it. In the example we’re using, such a statement might look like this:

“Perhaps you are thinking that an LGBTQ+ safe space isn’t necessary on campus because there are already places on campus that provide this function. I understand that concern. However, a space that is officially provided by the University provides access to resources with trained personnel. The national organization CampusPride provides training to university facilitators for exactly this reason.”

There are some techniques for rebuttal or refutation that work better than others. You would not want to say, “If you are one of the people who believe this about my proposition, you are wrong.” It’s better to say that their reservations are “misconceptions,” “myths,” or “mistaken ideas” that are commonly held about the proposition.

Building Upon Your Persuasive Speech’s Arguments

Once you have constructed the key arguments, it’s time to be sure the main points are well supported with evidence.

First, your evidence should be from sources that the audience will find credible. If you can find the same essential information from two sources but know that the audience will find the information more credible from one source than another, use and cite the information from the more credible one. For example, if you find the same statistical data on Wikipedia and the US Department of Labor’s website, cite the US Department of Labor. Audiences also accept information from sources they consider unbiased or indifferent. Gallup polls, for example, have been considered reliable sources of survey data because unlike some organizations, Gallup does not have a cause (political or otherwise) it’s supporting.

Secondly, your evidence should be new to the audience. New evidence is more attention-getting, and you will appear more credible if you tell the audience something new (as long as you cite it well) than if you use the “same old, same old” evidence they have heard before.

Third, in order to be effective and ethical, your supporting evidence should be relevant and not used out of context, manipulated, or edited to change its meaning.

After choosing the evidence and apportioning it to the correct parts of the speech, you will want to consider the use of metaphors, quotations, rhetorical devices, and narratives that will enhance the language and “listenability” of your speech. Narratives are especially good for introduction and conclusions, to get attention and to leave the audience with something dramatic. You might refer to the narrative in the introduction again in the conclusion to give the speech a sense of finality.

Lastly, you will want to decide if you should use any type of presentation aid for the speech. The decision to use visuals such as PowerPoint slides or a video clip in a persuasive speech should take into consideration the effect of the visuals on the audience and the time allotted for the speech. The charts, graphs, or photographs you use should be focused and credibly done.

Organization of a Persuasive Speech

You can see that the overall structure of a persuasive speech follows a common model: introduction, body (arguments and support), two-tailed arguments, and conclusion. Study the example at the end of this chapter to see this structure in action.

In speechwriting, you can think of a speech structure like the building of a house and organization like the arrangement of the rooms within it. As with other speeches, persuasive speeches can be organized topically, chronologically, or spatially. However, persuasive speeches often follow a problem-solution or problem-cause-solution pattern.

Organization for a proposition of fact

If your proposition is one of fact or definition, it will be best to use a topical organization for the body of your speech. That means that you will have two to four discrete, separate topics in support of the proposition.

Proposition: Converting to solar energy saves homeowners money.

1. (Pro-Argument 1) Solar energy can be economical to install.
2. (Pro-Argument 2) The government awards grants for solar.
3. (Pro-Argument 3) Solar energy reduces power bills.
4. (Pro-Argument 4) Solar energy requires less money for maintenance.

Organization for a proposition of value

A persuasive speech that incorporates a proposition of value will have a slightly different structure. A proposition of value must first define the “value” word for clarity and provide a basis for the other arguments of the speech. Then the pro-arguments for the proposition based on the definition.

Proposition: Hybrid cars are the best form of automotive transportation available today.

1. (Definition of value) Automotive transportation that is best meets three standards: dependable, economical, and environmentally responsible.
2. (Pro-Argument 1) Studies show that hybrid cars are durable and dependable.
3. (Pro-Argument 2) Hybrid cars are fuel-efficient.
4. (Pro-Argument 3) Hybrid cars are environmentally responsible.

Organization for a propositions of policy

The most common type of outline organizations for speeches with propositions of policy is problem-solution or problem-cause-solution. Typically, we don’t feel any motivation to change unless we are convinced that some harm, problem, need, or deficiency exists, and even more, that it affects us personally. Therefore, the organization of a speech about policy needs to first explain the problem and its cause, followed by the solution in the form of 3-5 pro-arguments.

Proposition: Universities should provide on-line learning options for all classes.

1. (Problem) Regular attendance in a physical classroom is no longer possible for all students.
2. (Cause) Changes brought about by the COVID pandemic have made guaranteed classroom attendance difficult.
3. (Pro-Argument 1) Providing on-line learning options protects the health of students.
4. (Pro-Argument 2) On-line learning serves students who cannot come to campus.
5. (Pro-Argument 3) Access to on-line learning allows students to maintain employment while still going to school.

To complete this outline, along with introduction and conclusion, your pro-arguments should be supported with fact, quotations, and statistics.

Conclusion

Your persuasive speech in class, as well as in real life, is an opportunity to share a passion or cause that you believe will matter to society and help the audience live a better life. Even if you are initially uncomfortable with the idea of persuasion, we use it all the time in diverse ways. Choose your topic based on your commitment and experience, look for quality evidence, craft your proposition so that it will be clear and audience appropriate, and put the finishing touches on it with an eye toward enhancing your logos, ethos, and pathos.