Chapter 5: Categorical Logic, Statements

Question 1

Corresponding Statement

Answer 1

categorical statements having the same subject terma nd the same predicate term

Question 2

Contradictories

Answer 2

two statements that cannot both be true, and cannot both be false

Question 3

Contraries

Answer 3

two statements that cannot both be true but both can be false

Question 4

Necessary Truth

Answer 4

a statement that cannot be false under an possible circumstances

Question 5

Subcontraries

Answer 5

two statements that cannot both be false but they can both be true

Question 6

Necessary Falsehood

Answer 6

a statement that is false and cannot be true under any possible circumstance

Question 7

Subalternation

Answer 7

the logical relationship between a universal statement and its corresponding particular statement

Question 8

Superaltern

Answer 8

universal statement in a subalternation

Question 9

Subaltern

Answer 9

a particular statement in a subalternation

Question 10

Immediate

Answer 10

an inference is immediate when a conclusion is drawn from only one premise

Question 11

Corresponding Statements

Answer 11

are categorical statements having the same subject term and the same predicate term

Question 12

Contradictories

Answer 12

two statements are contradictories if they cannot both be true and cannot both be false

Question 13

Contraries

Answer 13

two statements are contraries if they cannot both be true but they can both be false

Question 14

Necessary Truth

Answer 14

a statement is a necessary truth if it is true and it can not be false under any possible circumstance

Question 15

Subcontraries

Answer 15

two statements are subcontraries if they can’t both be false but they can both be true

Question 16

Necessary Falsehood

Answer 16

a statement is a necessary falsehood if it is false and under no circumstance can be true

Question 17

Subalternation

Answer 17

the logical relationship between a universal statement and its corresponding particular statement.

Question 18

Superaltern

Answer 18

universal statement

Question 19

Subaltern

Answer 19

particular statement

Question 20

Converse

Answer 20

the converse of a standard-form categorical statement is formed by interchanging its subject and predicate forms

Question 21

Conversion

Answer 21

the inference from a categorical statement to its converse

Question 22

Conversion by Limitation

Answer 22

the inference in which we switch the subject and predicate terms of an A statement and change the quantity from universal to particular