Rhetoric and persuasive techniques
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Lesson notes
What is Rhetoric?
- Rhetoric is the art of persuasion, one of the three ancient arts of discourse (the trivium) along with grammar and logic.
- It studies the techniques speakers and writers use to inform, persuade, and motivate their audiences.
- Aristotle defined rhetoric as 'the faculty of observing in any given case the available means of persuasion'.
- Rhetoric provides heuristics — practical methods for understanding, discovering, and developing arguments for particular situations.
- From Ancient Greece to the late 19th century, rhetoric played a central role in Western and Islamic education, training orators, lawyers, counsellors, historians, statesmen, and poets.
The Three Persuasive Appeals
- Ethos is the appeal to the speaker's or writer's character, credibility, or authority.
- Pathos is the appeal to the audience's emotions.
- Logos is the appeal to logic and reason.
- Aristotle identified these three appeals as the core ways a speaker or writer persuades an audience.
- A strong argument often combines all three appeals, but one may dominate depending on the purpose and audience.
The Five Canons of Rhetoric
- The five canons are the phases of developing a persuasive speech, first codified in classical Rome.
- Invention is finding the arguments and material to use.
- Arrangement is organising the material effectively.
- Style is choosing the right language and phrasing.
- Memory is learning and retaining the speech.
- Delivery is how the speech is performed — voice, gesture, and presence.
Persuasive Devices: Questions and Address
- A rhetorical question is asked for effect, not to get an answer; it makes the audience think and often implies an obvious answer.
- Direct address uses words like 'you' or 'we' to speak straight to the audience, creating a personal connection.
- Direct address can make the audience feel included, responsible, or challenged.
Persuasive Devices: Repetition and Pattern
- Repetition repeats words or phrases to make key ideas memorable and to emphasise their importance.
- The rule of three groups three words, phrases, or ideas together; the pattern is satisfying and memorable for audiences.
- Repetition and the rule of three can build rhythm and make a speech or text more powerful.
Persuasive Devices: Evidence and Authority
- Statistics use numbers and data to appeal to logic and make an argument seem factual and objective.
- Expert opinion uses the views of a qualified person to add authority and credibility (ethos).
- Anecdote is a short personal story that can make an argument relatable and emotionally engaging (pathos).
- Using evidence well strengthens an argument, but evidence must be relevant and trustworthy to be persuasive.
Persuasive Devices: Emotion and Exaggeration
- Emotive language uses words chosen to stir feelings such as fear, pity, anger, or hope.
- Hyperbole is deliberate exaggeration used for emphasis or dramatic effect, not to be taken literally.
- Emotive language and hyperbole appeal to pathos and can make an audience react strongly.
Counter-Argument
- A counter-argument acknowledges an opposing view before responding to it.
- Addressing the other side can make a speaker or writer seem fair, informed, and reasonable (ethos).
- A strong counter-argument is followed by a rebuttal that shows why the original position is stronger.
- Ignoring opposing views can make an argument seem weak or one-sided.
Identifying and Explaining Devices
- To identify a device, look for the language feature itself — for example, a question that needs no answer, or a group of three.
- To explain its effect, describe what it makes the audience think, feel, or do.
- Link the device to the purpose: does it build trust (ethos), stir emotion (pathos), or appeal to reason (logos)?
- Use precise terminology — name the device and then explain its impact on the audience.
- A good explanation connects the device to the writer's overall argument or message.
Slides
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Practice questions
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1.In rhetoric, which appeal is based on the speaker's character, credibility and trustworthiness?
Easy- AEthos
- BPathos
- CLogos
- DBathos
2.Which appeal is designed to persuade an audience by appealing to their emotions?
Easy- ALogos
- BPathos
- CEthos
- DChronos
3.Which appeal relies on evidence, facts and logical reasoning?
Easy- AEthos
- BPathos
- CLogos
- DMythos
4.A writer asks, 'Is it fair that our streets are left dark and dangerous?' What persuasive device is being used?
Medium- ARhetorical question
- BEmotive language
- CExpert opinion
- DAnecdote
5.Which device is used in the sentence 'We must act now, we must act together, we must act for our children'?
Medium- ARule of three
- BHyperbole
- CCounter-argument
- DAnecdote
6.Which of the following are persuasive devices? (Select all that apply.)
Medium- ARhetorical question
- BDirect address
- CRepetition
- DRule of three
- EAlliteration
7.Hyperbole is deliberate exaggeration for effect.
EasyTrue or false?
8.An anecdote is a short, personal story used to illustrate a point.
EasyTrue or false?
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