Lesson 6 and 7
A sentence that is either true or false.
What is a Statement?
A statement whose truth value depends upon evidence or information from outside itself.
What is a supported statement?
An actual inconsistency between two statements: they cannot both be true at the same time.
What is Real Disagreement?
A,E,I,O
What are the four types of categorical statements abbreviated by one letter?
A and I statements
E and O statements
What are two pairs of statement types related by subimplication?
True truth value and false truth value.
What are the possible truth values of a statement?
Looking to authority, experiences or deductive reasoning.
What are the three methods for determining truth value of supported statements?
Is, are, was, were, will be, etc.
What are examples of Verbs of Being?
A and O, I and E
What are two pairs of statement types that contradict one another?
I and A statements
O and E statements
What are two pairs of statements types that are related by superimplication?
Questions, commands or nonsense statements.
What are the types of sentences that are not statements?
Statements that can both be true at the same time.
What are Consistent Statements?
The positive or negative nature of a statements claim about the subject.
What is the Quality of a statement
If and only if two statements can both be false but cannot both be true.
What is Contrariety?
Some dogs are not mammals.
What is an example of an O statement?
A statement whose truth value can be determined from the statement itself.
What is a self-supporting statement?
The truth value of one statement requires the truth value of the other statements.
What are statements that are related by implication?
Universal Affirmative (All S is P)
Universal Negative (No S is P)
Particular Affirmative (Some S is P)
Particular Negative (Some S is Not P)
What are the four types of categorical statements expressed in terms of S and P?
I and O statements.
What pair of statement types are subcontraries?
All Christians are believers
What is an example of an A statement
1. Self-reports.
2. Statements that are true or false by logical structure.
3. Statements that are true or false by definition.
What are three types of self-supporting statements?
The truth or falsity of one statement has nothing to do with the truth or falsity of the other statement.
What are independent statements?
The subject and the predicate.
What are the two main parts of a categorical statement?
The relationship between a universal and particular statement of the same quality, in which the truth of the universal necessitates the truth of the particular.
What is Subimplication?