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21 Cards in this Set

  • Front
  • Back
What is a categorical statement?
A categorical statement is one which affirms or denies something about a given subject.
What are the four forms of categorical statements?
The four forms of categorical statements are:
1. All S are P.
2. No S are P.
3. Some S are P.
4. Some S are not P.
What are the two parts of a statement?
The two parts of a statement are:
1. Subject
2. Predicate
What is the subject?
The subject of a statement is the term being described, or about which something is asserted.
What is the predicate?
The predicate is the term that describes or asserts something about the subject.
What does the quantity of a statement identify?
The quantity of a statement identifies whether the statement is universal (All or No) or particular (Some and Some...not)
When is a statement universal?
A statement is universal when it makes a claim about the entire extension of a subject.
When is a statement particular?
A statement is particular when it makes a claim about part of the extension of the subject.
What does the quality of a statement identify?
The quality of a statement identifies whether the statement is affirmative (all and some), or negative (No and Some...not).
When is a statement affirmative?
A statement is affirmative when it affirms something about the subject.
When is a statement negative?
A statement is negative when it denies something about the subject.
What are the four types of categorical statements?
The four types of categorical statements are:
1. Universal affirmative
2. Universal negative
3. Particular affirmative
4. Particular negative
What is the square of opposition?
The square of opposition is a diagram of the basic relationships between statements with the same subject and predicate.
Universal affirmative statements are also known as:
A statements
Universal negative statements are also known as:
E statements.
Particular affirmative statements are also known as:
I statements
Particular negative statements are also known as:
O statements
What five different relationships between categorical statements does the square of opposition present?
The five different relationships are:
1. Contradiction
2. Contrariety
3. Subcontrariety
4. Subimplication
5. Superimplication
When are two statements in contradtiction?
Two statements are in contradiction if and only if they always have opposite truth value.
What are the four types of categorical statements?
The four types of categorical statements are:
1. Universal affirmative
2. Universal negative
3. Particular affirmative
4. Particular negative
What is the square of opposition?
The square of opposition is a diagram of the basic relationships between statements with the same subject and predicate.