preparing to persuade reasoning and logic
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Preparing to Persuade: Reasoning and Logic. Aristotle’s “Proofs”. “ logos ” to describe logical evidence “ ethos ” to describe speaker credibility “ pathos ” to refer to emotion. Types of Reasoning : Inductive Reasoning. Draw specific inferences from broad facts.

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aristotle s proofs
Aristotle’s “Proofs”

“logos” to describe logical evidence

“ethos” to describe speaker credibility

“pathos” to refer to emotion.

types of reasoning inductive reasoning
Types of Reasoning:Inductive Reasoning
  • Draw specific inferences from broad facts.
  • Use inductive reasoning to explain why a current suggestion would or would not work, based on past experiences.
types of reasoning inductive reasoning4
Types of Reasoning:Inductive Reasoning
  • Any research supporting assertions should have clear credibility.
  • Examples should be clearly representative of the claim.
  • Evidence should directly support the claim.
  • Assertions should not be trite or made hastily.
types of reasoning deductive reasoning
Types of Reasoning:Deductive Reasoning
  • Works opposite from inductive reasoning in that we use broad facts to make specific assertions.
  • Starts with a major premise, which is generally accepted knowledge.
  • Major premise leads to a more specific assertion—the minor premise.
  • Finally, a conclusion is drawn between the two.
types of reasoning deductive reasoning6
Types of Reasoning:Deductive Reasoning
  • The major premise must have viability. If it is questionable, a fallacy could be created.
  • The minor premises should share a relationship with major premises.
  • If the major premise is questionable, further credible support will be required.
types of reasoning causal reasoning
Types of Reasoning:Causal Reasoning

Causal reasoning relies on a cause-

effect relationship. Some causal

relationships are commonly

accepted . . . :

Example:

If I exercise regularly, I will lose weight.

. . . while others stir controversy:

Example:

Playing violent videogames promotes violence in children.

types of reasoning causal reasoning8
Types of Reasoning:Causal Reasoning
  • Simplistic answers should be avoided. Just because one event occurs does not necessarily mean that a relationship between the two can be established.
  • If the cause-effect relationship seems unlikely or is commonly protested, numerous credible sources will be needed to gain consideration.
  • Most effects can have several causes. For example, in the example about losing weight, a person may have exercised, consumed fewer calories, and limited carbohydrate intake—all factors in weight reduction.
types of reasoning analogical reasoning
Types of Reasoning:Analogical Reasoning

Analogical reasoning involves the assumption that because

two things contain commonalities or are interrelated, they

share a likeness or a similar result.

Example:

  • “Because my mother had breast cancer, I’d better get checked for it, too.
  • “Since Ford Explorer has faulty tires, your Ford Focus might have them, as well.”
types of reasoning analogical reasoning10
Types of Reasoning:Analogical Reasoning

In analogical reasoning:

  • The main consideration in analogical reasoning is ensuring that both premises are similar to each other.
  • One premise should not minimize the other.
fallacies
Fallacies
  • Straw man fallacy
  • The either-or fallacy
  • The bandwagon
  • The slippery slope
  • The red herring
  • Ad hominem argument
  • Post-hoc fallacy
  • Non-sequitur fallacy
  • Hasty generalizations
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