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On p. 6 (Warm-Up),write down three details in this ad that suggest “nature.”

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Circulate and trade details. See how many you can find.

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Logical Fallacies

Semiotics

English 11

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What you will learn today

  • You will be able to identify persuasive techniques such as appeals and logical fallacies in advertisements
  • You will be able to analyze how persuasive techniques are used to persuade an audience.

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What you will do today

  • You will take notes on logical fallacies and appeals.
  • In groups, you will choose an advertisement and explain its logical fallacies and/or appeals to the class.

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1. fallacy

From Latin root fallac, which means to deceive.

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1 finger = I have no idea.

2 fingers = I think I know it.

3 fingers = I definitely know it.

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truth

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or

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untruth?

The idea that the sun moves around the earth is a fallacy.

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Logical Fallacy

  • Faulty or bad logic
  • A statement that looks right, but is wrong
  • Sometimes used unintentionally
  • Sometimes used to deceive or trick an audience into doing something

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2. appeal

From Latin root appel, which means to call or address.

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1 finger = I have no idea.

2 fingers = I think I know it.

3 fingers = I definitely know it.

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call

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or

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rejection?

The president’s speech was an appeal for peace.

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Appeals

  • persuasive techniques
  • designed to make the audience respond in a specific way or to bring out specific feelings or thoughts

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Appeal to Nature

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Appeal to Popular Assent: �Bandwagon Approach

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Appeal to Popular Assent: �Patriotic Approach

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Appeal to Emotion

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Appeal to Tradition

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False Cause

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Faulty Analogy

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Genetic Fallacy

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False Dilemma

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False Authority

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Red Herring

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Slippery Slope

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Group Activity

  • Choose an advertisement from the Internet by typing advertisement in the Google search field and selecting “images.”
  • Copy the image of the ad and paste it (or drag and drop it) into the shared document called Logical Fallacy ads.
  • Analyze the logical fallacies and/or appeals in the ad.

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Today’s Objectives -

How did you do?

  • You will be able to identify appeals and logical fallacies in advertisements
  • You will be able to analyze how appeals and logical fallacies are used to persuade an audience.
  • You will choose an advertisement and explain its logical fallacies and/or appeals to the class.

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