3.2 Rhetoric, Argument & Author's Craft
Key Takeaways
- Aristotle's three rhetorical appeals are ethos (credibility/character), pathos (emotion), and logos (logic/evidence); kairos adds the timeliness of the appeal.
- A complete argument contains a claim, evidence, and reasoning, and a strong one also acknowledges and refutes a counterclaim.
- In the Toulmin model, the warrant is the unstated assumption that links the evidence (data) to the claim; backing supports the warrant and a qualifier limits the claim.
- Common logical fallacies include ad hominem, straw man, false dilemma, bandwagon (ad populum), slippery slope, red herring, and circular reasoning.
- Author's craft is analyzed through purpose, perspective, and bias, plus diction (word choice) and syntax (sentence structure) that shape tone and meaning.
The Three Rhetorical Appeals (Plus Kairos)
Whenever a text tries to persuade, Praxis 5038 expects you to identify how it persuades. Aristotle named three rhetorical appeals, or modes of persuasion.
| Appeal | Persuades by | Signal in a text |
|---|---|---|
| Ethos | Character, credibility, authority | citing an expert's qualifications; a trustworthy tone |
| Pathos | Emotion | vivid imagery, fear or sympathy, loaded words, music |
| Logos | Logic, reason, evidence | statistics, data, syllogisms, cited studies |
A fourth term, kairos, refers to the timeliness or fitting occasion of an appeal — saying the right thing at the opportune moment. A frequent trap: an ad that leans on dramatic music and frightening images but offers little evidence relies on pathos, not logos; a writer who quotes a respected expert's credentials is using ethos, not pathos. Match the appeal to the mechanism, not the topic.
Argument Structure: Claim, Evidence, Reasoning, Counterclaim
A sound argument has four moving parts:
- Claim: the arguable position (a thesis), not a fact everyone accepts.
- Evidence: facts, data, examples, expert testimony, or textual support that back the claim.
- Reasoning: the explanation of why the evidence supports the claim — the logical bridge.
- Counterclaim (and rebuttal): an anticipated objection from the opposing side that the writer names and then refutes. Addressing a counterclaim strengthens an argument by showing the writer considered other views; it does not weaken it.
Do not confuse a counterargument (the opposing view a writer raises in order to answer it) with a rebuttal (the writer's response that refutes that view). Both appear in strong persuasive essays and formal debates.
The Toulmin Model
British philosopher Stephen Toulmin refined argument into six elements the exam has tested directly:
- Claim — the conclusion being argued.
- Data (grounds) — the evidence offered.
- Warrant — the often-unstated assumption that connects the data to the claim.
- Backing — support for the warrant itself.
- Qualifier — a word (“usually,” “probably”) that limits the claim's certainty.
- Rebuttal — conditions under which the claim would not hold.
The warrant is the most frequently tested piece because it is the hidden logical link. If someone argues “It is raining, so the game will be canceled,” the unstated warrant is “Games are canceled when it rains.”
Rhetorical Devices Authors Use to Persuade
Beyond the appeals, writers and speakers deploy rhetorical devices — deliberate structural moves that heighten impact. Praxis 5038 asks you to name them.
- Rhetorical question: a question asked for effect, not an answer (“Who wouldn't want cleaner air?”).
- Anaphora: repeating the same words at the start of successive clauses (“We shall fight… We shall fight…”).
- Parallelism: matching grammatical structure across items (“of the people, by the people, for the people”).
- Antithesis: balancing opposite ideas in parallel form (“Ask not what your country can do for you…”).
- Repetition: restating a key word or phrase to emphasize it.
- Allusion: a brief reference to a well-known text, person, or event that borrows its weight.
These devices frequently carry an appeal — anaphora and vivid repetition often serve pathos, while parallel evidence lists serve logos. A strong test-taker names both the device and the appeal it advances.
The Most-Tested Logical Fallacies
A logical fallacy is a flaw in reasoning that makes an argument invalid even when it sounds convincing. Learn these by their signature move.
| Fallacy | Signature move |
|---|---|
| Ad hominem | Attacks the person instead of the argument |
| Straw man | Distorts an opponent's position, then refutes the distortion |
| False dilemma (either/or) | Presents only two options when more exist |
| Bandwagon (ad populum) | Claims something is true because “everyone” believes it |
| Slippery slope | Assumes one small step leads to an extreme outcome |
| Red herring | Introduces an irrelevant point to distract |
| Circular reasoning | Uses the conclusion as its own evidence |
| Hasty generalization | Draws a broad conclusion from too little evidence |
| Post hoc | Assumes that because B followed A, A caused B |
Watch the wording. “We must ban this book because everyone knows it is dangerous” is bandwagon (popularity treated as proof). “Either we cut the arts entirely or the school goes bankrupt” is a false dilemma. “My opponent has no idea what he's talking about” is ad hominem.
Author's Purpose, Perspective, and Bias
Every text has a purpose — to inform, persuade, entertain, or describe. It also carries a perspective (the author's point of view shaped by background and values) and may show bias (an unbalanced slant that omits opposing evidence). Bias is not automatically dishonest, but the exam expects you to detect it: a source that exists mainly to sell a product and omits opposing views is signaling bias.
Diction and Syntax as Craft
Diction is an author's word choice; syntax is the arrangement of words into sentences. Together they create tone (the author's attitude toward the subject) and control emphasis. Formal diction and long, subordinated sentences build an authoritative tone; short, blunt sentences create urgency; connotative or loaded words steer emotion. Distinguish tone (author's attitude) from mood (the feeling created in the reader) — a favorite Praxis distractor pairing.
Worked Argument Analysis
Passage: “Dr. Alvarez, a cardiologist with thirty years of practice, warns that skipping breakfast strains the heart. Studies of 10,000 adults confirm higher risk among breakfast-skippers. Surely no one wants to gamble with their life.”
Claim: Skipping breakfast harms the heart. Ethos: citing Dr. Alvarez's credentials. Logos: the 10,000-adult study. Pathos: “gamble with their life.” The argument is fairly strong because it blends all three appeals with real evidence — but a careful reader checks whether the study shows correlation or causation before accepting the causal claim.
A columnist writes: "You shouldn't listen to Senator Diaz's transportation plan—he's a terrible dresser who can barely run his own office." Which logical fallacy does this most clearly commit?
In the Toulmin model of argument, the underlying assumption that connects the evidence (data) to the claim is called the:
A public-service announcement fills the screen with frightening images and swelling music while presenting almost no statistics or reasoning. Which rhetorical appeal does it rely on most heavily?