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Philosophy 102: Introduction to Logic
Quiz on Informal Fallacies II Answers

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This quiz is based on the following notes:
The Nature of Fallacies
Fallacy of Complex Question
Fallacy of False Cause
Petitio Principii
Fallacy of Accident
Fallacy of Converse Accident


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  FALLACY 2 QUIZ......

Directions: Identify the fallacies of relevance in each of the following passages. Choose from the fallacies of complex question, false cause, petitio principii, accident and converse accident.

1. Studying too much for a test can often be confusing, for the reason that when you study too much, most of the important points no longer are clear.

Petitio principii: The conclusion is a restatement of the premiss.

2. Whenever I wear green socks my logic grade goes up. That is why I save my green socks to wear only on the days of the test.

Non Causa Pro Causa: This false cause results from no proposed causal mechanism.

3. How can we balance the budget, help our farmers, improve infrastructure, rebuild our military, and return to full employment? Only one way is clear: vote Republican.

Complex Question: The argument presupposes that these conflicting economic factors can be solved at the same time.

4. Nixon cheated on his income tax, Agnew cheated on his income tax, and, I've heard, so did Bush. I conclude that all politicians cheat on their income tax.

Converse Accident: The generalization is based on too few representative instances.

5. Children and mentally ill persons cannot vote. This state of affairs proves that in America not all are free and few have the inalienable right of liberty.

Converse Accident: From non-typical cases, the author is over-generalizing.

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