Reasons listeners will be persuaded
Ethos
Name used by Aristotle for what modern students of communication refer to as credibility
Credibility
Exists in…
May change based on…
If youre audience sees you as…
Factors of credibility
Competence
Factor of credibility
How an audience regards a speaker’s intelligence, expertise, and knowledge of the subject.
Character
Factor of credibility
How an audience regards a speaker’s sincerity, trustworthiness, and concern for the well being of others
Types of credibility
Initial credibility
Credibility of a speaker before they start to speak
Derived credibility
Credibility of a speaker produced by everything they say and do during the speech
Terminal credibility
Credibility of a speaker at the end of the speech.
Enhancing your credibility
Say and do everything in a way to make you appear capable and trustworthy.
1. Explain your competence
2. Establish common grounds
3. Deliver speech fluently
Explain your competence
Explain how you thoroughly researched your topic or have experience that gives you special knowledge/insight.
Establish common ground with the audience
Connect with values, attitudes, or experiences of the audience.
Deliver the speech fluently, expressively, and with conviction
Logos
Name used by Aristotle for logical appeal of a speaker.
Evidence
Effects of strong evidence
Tips for evidence
Using evidence from credible sources
Evidence from competent, credible sources are more persuasive than evidence from less qualified sources. Suspicious of evidence from sources that could be biased or self-interested.
- Best way to be persuasive is to rely on evidence from objective, nonpartisan sources.
Make clear the point of your evidence
Use evidence to prove a point. You can’t count on listeners to draw conclusions on their own.
Reasoning
Process of drawing a conclusion on the basis of evidence.
- Superstitions are instances of faulty reasoning
Major concerns with respect to reasoning
Reasoning from specific instances
Reasoning from particular facts to a general conclusion
- Use this reasoning daily
- Beware of jumping to conclusions on the basis of insufficient evidence
- Make sure sample of specific instances is large enough to justify your conclusion
- Make sure instances are fair, unbiased, and representative
- Does this specific instance represent a majority of instances?
- Reinforce argument with stats or testimonies
Reasoning from principle
Reasoning that moves from general principle to a specific principle
- General statement to minor premise and end with specific conclusion
- Ex: All people are mortal→Socrates is a person→ Socrates is moral
- Need to know if you need evidence for your general statement to convince the audience or if they will accept it without evidence. May need to support minor premise with evidence too.