Deck 6: Categorical Syllogisms

Question 1

"No children are soldiers; some males are soldiers; therefore, some males are not children."
Which term in this standard-form syllogism is the middle term?

A)children
B)soldiers
C)males
D)therefore

Answer 1

soldiers

Question 2

"Some logic professors are not good speakers.All logic professors are indi- viduals who have nice suits.Therefore, no individuals with nice suits are good speakers."
What is the mood of this standard-form syllogism?

A)OAO
B)AOA
C)AOE
D)OAE

Answer 2

OAE

Question 3

What happens in the fallacy of the undistributed middle?

A)The major and minor terms are not directly linked by the middle term because the major term is undistributed.
B)The major and minor terms are not directly linked by the middle term since either the major or minor term is undistributed.
C)The major and minor terms are not directly linked by the middle term since the minor term is undistributed.
D)The major and minor terms are not directly linked by the middle term, since the middle term is not distributed in at least one premise.

Answer 3

The major and minor terms are not directly linked by the middle term, since the middle term is not distributed in at least one premise.

Question 4

"No men are dogs.No dogs eat cheese.Therefore, all cheese-eaters are men." What fallacy is committed by this argument?

A)existential fallacy
B)fallacy of drawing an affirmative conclusion from a negative premise
C)fallacy of exclusive premises
D)fallacy of illicit process

Question 5

Which syllogism is not valid in the fourth figure?

A)AEE
B)IAI
C)EIO
D)OAO

Question 6

What characterizes the third figure?

A)The middle term is the subject of both premises.
B)The middle term is the predicate of both premises.
C)The middle term is the subject of the major premise and the predicate of the minor premise.
D)The middle term is the predicate of the major premise and the subject of the minor premise.

Question 7

When you test a syllogism with a Venn diagram, how do you diagram the conclusion?

A)you don't
B)last
C)first
D)after the major premise

Question 8

"All wild animals are vicious; some wild animals are from Africa; therefore, some animals from Africa are vicious."
Which proposition should be diagrammed first in a Venn diagram test of validity?

A)It makes no difference.
B)All wild animals are vicious.
C)Some wild animals are from Africa.
D)Therefore, some animals from Africa are vicious.

Question 9

"All good chairs are made in a factory.All wooden chairs are good chairs; therefore, all good wooden chairs are made in a factory."
Which of the six syllogistic rules, if any, does the preceding syllogism break?

A)It breaks rule #6.
B)It breaks rule #3.
C)It breaks rule #1.
D)It breaks no rule-it is valid.

Question 10

"No risks are things worth taking; some things worth taking are not exciting; there- fore, some things that are not exciting are not risks."
Which fallacy is committed in this syllogism?

A)the existential fallacy
B)the fallacy of exclusive premises
C)the fallacy of undistributed middle
D)the fallacy of the illicit major

Question 11

A valid syllogism must have its major and minor premises in the proper order.

Question 12

The conclusion of a syllogism is never diagrammed in a Venn diagram test.

Question 13

In a valid syllogism, you cannot derive a negative conclusion from two negative
premises.

Question 14

In a syllogism of the second figure, the major term is in the subject position and
the minor term is in the predicate position.

Question 15

In syllogistic logic, "loud" and "noisy" count as the same term.

Question 16

Matching:

-The mood and ________ of a syllogism determine its form.

A)Figure
B)quantity
C)quality

Question 17

Matching:

-A valid syllogism will always distribute the ________ term in at least one premise.

A)subject
B)middle
C)predicate

Question 18

Matching:

-The ________ of a syllogism is determined by the letters A, E, I, and O, correspond- ing to the propositions it contains.

A)mood
B)figure
C)validity

Question 19

Matching:

-The term "________" describes the position of the middle term in the premises.

A)figure
B)mood
C)subject

Question 20

Matching:

-If either premise in a syllogism is ________, then the conclusion must be negative.

A)false
B)negative
C)positive