Question 1

Consider the deductive argument below: God is love. Love is blind. Stevie Wonder is blind. Therefore, Stevie Wonder is God. This syllogism is:

Accepted Answer

A)  True 
B)  Valid 
C)  Invalid (More than four terms, more than two premises) 
D)  Sound 
A)  True 
B)  Valid 
C)  Invalid (More than four terms, more than two premises) 
D)  Sound

Question 2

All English muffins have nooks and crannies. All bagels have holes in the middle. Therefore, no English muffin is a bagel. This syllogism is:

Accepted Answer

A)  Valid 
B)  Invalid; violates the four term rule 
C)  Invalid; no universal conclusion 
D)  Invalid; two negative premises 
A)  Valid 
B)  Invalid; violates the four term rule 
C)  Invalid; no universal conclusion 
D)  Invalid; two negative premises

Question 3

Which statement about the validity and soundness of syllogisms is most accurate?

Accepted Answer

A)  If a conclusion is valid, it must be sound. 
B)  If a conclusion is sound, it must be valid. (Validity is a prerequisite for soundness.) 
C)  A conclusion that is valid cannot be sound. 
D)  If a conclusion is unsound, it cannot be valid. 
E)  A conclusion can be sound whether it is valid or not. 
A)  If a conclusion is valid, it must be sound. 
B)  If a conclusion is sound, it must be valid. (Validity is a prerequisite for soundness.) 
C)  A conclusion that is valid cannot be sound. 
D)  If a conclusion is unsound, it cannot be valid. 
E)  A conclusion can be sound whether it is valid or not.

Question 4

Explain the difference between validity and soundness as it applies to a categorical syllogism. Provide an example or examples to demonstrate your answer.

Accepted Answer

Validity and soundness are two important

Question 5

Darlene laments, "It's Friday night. Either I stay home and wish I went out, or I go out and wish I stayed home." What type of syllogism has Darlene offered?

Accepted Answer

A)  Categorical 
B)  Disjunctive 
C)  Subjunctive 
D)  Conditional 
E)  Abjective 
A)  Categorical 
B)  Disjunctive 
C)  Subjunctive 
D)  Conditional 
E)  Abjective

Question 6

All snakes that are venomous are carnivorous. All snakes that are constrictors are carnivorous. Therefore, all snakes are carnivorous. This syllogism is:

Accepted Answer

A)  Valid 
B)  Invalid (the middle term, carnivorous, is not distributed, and it appears in the conclusion) 
C)  True 
D)  False 
A)  Valid 
B)  Invalid (the middle term, carnivorous, is not distributed, and it appears in the conclusion) 
C)  True 
D)  False

Question 7

Virgil states, "Form logic is useless in everyday life." Is he right? Why or why not?

Accepted Answer

It depends on the context in which Virgi

Question 8

All Dutch people are from Holland. All people from Holland wear wooden shoes. Therefore, all Dutch people wear wooden shoes. This syllogism is:

Accepted Answer

A)  Valid 
B)  Invalid 
C)  Sound 
D)  Untrue 
E)  Fallacious 
A)  Valid 
B)  Invalid 
C)  Sound 
D)  Untrue 
E)  Fallacious

Question 9

Some A are B.All C are D. Therefore, some A are D. This syllogism is:

Accepted Answer

A)  Valid 
B)  Invalid (violates the four term rule) 
C)  Unsound 
D)  Fallacious 
A)  Valid 
B)  Invalid (violates the four term rule) 
C)  Unsound 
D)  Fallacious

Question 10

In formal logic, an argument in which the conclusion necessarily follows from the premises, if the premises are true, refers to:

Accepted Answer

A)  An enthymeme 
B)  A syllogism 
C)  The Toulmin model 
D)  An inductive argument 
A)  An enthymeme 
B)  A syllogism 
C)  The Toulmin model 
D)  An inductive argument

Consider the deductive argument below: God is love. Love is blind. Stevie Wonder is blind. Therefore, Stevie Wonder is God. This syllogism is:

All English muffins have nooks and crannies. All bagels have holes in the middle. Therefore, no English muffin is a bagel. This syllogism is:

Which statement about the validity and soundness of syllogisms is most accurate?

Explain the difference between validity and soundness as it applies to a categorical syllogism. Provide an example or examples to demonstrate your answer.

Darlene laments, "It's Friday night. Either I stay home and wish I went out, or I go out and wish I stayed home." What type of syllogism has Darlene offered?

All snakes that are venomous are carnivorous. All snakes that are constrictors are carnivorous. Therefore, all snakes are carnivorous. This syllogism is:

Virgil states, "Form logic is useless in everyday life." Is he right? Why or why not?

All Dutch people are from Holland. All people from Holland wear wooden shoes. Therefore, all Dutch people wear wooden shoes. This syllogism is:

Some A are B.All C are D. Therefore, some A are D. This syllogism is:

In formal logic, an argument in which the conclusion necessarily follows from the premises, if the premises are true, refers to:

Why Study Argument?

Arguing Ethically

Argument Theories, Models, and Definitions

The Nature of Critical Thinking

Building Blocks of Argument

Evidence and Proof

Informal Reasoning

Fallacies in Reasoning, Part I

Fallacies in Reasoning, Part II

Judgment, Decision Making and Problem Solving

Effective Advocacy

Filters

Exam 11: Deductive Reasoning

Consider the deductive argument below: God is love. Love is blind. Stevie Wonder is blind. Therefore, Stevie Wonder is God. This syllogism is:

All English muffins have nooks and crannies. All bagels have holes in the middle. Therefore, no English muffin is a bagel. This syllogism is:

Which statement about the validity and soundness of syllogisms is most accurate?

Explain the difference between validity and soundness as it applies to a categorical syllogism. Provide an example or examples to demonstrate your answer.

Darlene laments, "It's Friday night. Either I stay home and wish I went out, or I go out and wish I stayed home." What type of syllogism has Darlene offered?

All snakes that are venomous are carnivorous. All snakes that are constrictors are carnivorous. Therefore, all snakes are carnivorous. This syllogism is:

Virgil states, "Form logic is useless in everyday life." Is he right? Why or why not?

All Dutch people are from Holland. All people from Holland wear wooden shoes. Therefore, all Dutch people wear wooden shoes. This syllogism is:

Some A are B.All C are D. Therefore, some A are D. This syllogism is:

In formal logic, an argument in which the conclusion necessarily follows from the premises, if the premises are true, refers to:

Why Study Argument?

Arguing Ethically

Argument Theories, Models, and Definitions

The Nature of Critical Thinking

Building Blocks of Argument

Evidence and Proof

Informal Reasoning

Fallacies in Reasoning, Part I

Fallacies in Reasoning, Part II

Judgment, Decision Making and Problem Solving

Effective Advocacy

Filters