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