Learning Objectives
- Differentiate among the four types of persuasive claims.
- Understand how the four types of persuasive claims lead to different types of persuasive speeches.
- Explain the two types of policy claims.
Obviously, there are many different persuasive speech topics you could select for a public speaking class. Anything from localized claims like changing a specific college or university policy to larger societal claims like adding more enforcement against the trafficking of women and children in the United States could make for an interesting persuasive speech. You’ll notice in the previous sentence we referred to the two topics as claims. In this use of the word “claim,” we are declaring the goodness or positivity of an attitude, value, belief, or behavior that others may dispute. As a result of the dispute between our perceptions of the goodness of an attitude, value, belief, or behavior and the perceptions of others, we attempt to support the claim we make using some sort of evidence and logic as we attempt to persuade others. There are four common claims that can be made: definitional, factual, policy, and value.
Definitional Claims
The first common types of claims that a persuasive speaker can make are definitional or classification claims. Definitional claims are claims over the denotation or classification of what something is. In essence, we are trying to argue for what something is or what something is not. Most definitional claims falling to a basic argument formula:
X is (or is not) a Y because it has (or does not have) features A, B, or C.
For example, maybe you’re trying to persuade your class that while therapeutic massage is often performed on nude clients, it is not a form of prostitution. You could start by explaining what therapeutic massage is and then what prostitution is. You could even look at the legal definition of prostitution and demonstrate to your peers that therapeutic massage does not fall into the legal definition of prostitution because it does not involve the behaviors characterized by that definition.
Factual Claims
Factual claims set out to argue the truth or falsity of an assertion. Some factual claims are simple to answer: Barack Obama is the first African American President; the tallest man in the world, Robert Wadlow, was eight feet and eleven inches tall; Facebook wasn’t profitable until 2009. All these factual claims are well documented by evidence and can be easily supported with a little research.
However, many factual claims cannot be answered absolutely. Some factual claims are simply hard to determine the falsity or trueness of because the final answer on the subject has not been discovered (e.g., when is censorship good, what rights should animals have, when does life begin). Probably the most historically interesting and consistent factual claim is the existence of a higher power, God, or other religious deity. The simple fact of the matter is that there is not enough evidence to cl