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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Deductive reasoning |
•major premise (if one smokes , health will go down) •minor premise (John is a smoker) •conclusion ( therefore Johns health will go down) |
M,m,c |
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Inductive reasoning |
•specific facts (3 generations of the Smith family have rushed for a sorority ) •General conclusion ( so we can assume that Mr. Smiths daughter will rush for a sorority as well) |
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If A then B, A therefore B |
VALID |
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If A then B, not B therefore not A |
VALID |
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All A's are B, all B's are C's therefore ... |
all A's are C's |
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General principles |
INDUCTIVE |
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Specific instances |
DEDUCTIVE |
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Sound = valid ? |
YES, valid |
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Valid =sound ? |
NO, invalid |
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Speaker /\ / \ / \ ------------ Aud. subject
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Valid |
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EXAMPLE ( valid or invalid)
If it is a yorkie, then it is a dog. It is a dog Therefore it must be a yorkie. |
INVALID ( a then b , not b therefore not a) |
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EXAMPLE ( VALID OR INVALID) |
If it is a yorkie, then it is a dog. It is a yorkie . Therefore it is a dog . |
VALID ( a then b , a therefore b) |
