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Logic Quiz 2
N/A
10
Philosophy
Undergraduate 1
01/31/2013

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Term
Valid Argument
Definition
A deductive argument with a FORM such that if the premises are true, the conclusions must be true.
Term
Invalid Argument
Definition
A deductive argument having true premises and a false conclusion.
Term
Sound Argument
Definition
A valid argument with true premises.
Term
Unsound Argument
Definition
Is an invalid argument, a deductive argument that has one or more (both) false premises.
Term
Strong Argument
Definition
An inductive argument with a FORM such that if the premises are true, it is improbable that the conclusion will be false.
Term
Cogent Argument
Definition
A strong argument with true premises.
Term
Uncogent Argument
Definition
Is an argument that is weak, an inductive argument that has one or more false premises, or both.
Term
Counterexample
Definition
A substitution instance of an argument form having true premises and a false conclusion.
Term
Counterexample Method
Definition
Two Steps;
1. Extract the form of the argument.
2. Construct a counterexample.
Term
Weak Argument
Definition
The conclusion does not follow probably from the premises.
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