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Introductory Logic Vocab
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Introductory Logic Vocab
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25 Questions

1. A self-supporting statement is a statement whose truth value can be determined from the statement itself

2. A set of statements - one of which appears to be implied or supported by the others

3. Is valid and has true premises

4. The science and art of reasoning well

5. Deals directly with the proper modes of reasoning

6. A statement cannot be both true and false

7. Changing the definition of a term in the middle of an argument

8. A diagram of the basic relationships between statements with the same subject and predicate

9. A number from 1 to 4 identifying the placement of its middle term

10. The set of all terms not included in the given term

11. An illegitimate appeal to force

12. The premise containing the major term

13. A tautology is a statement which is always true because of its logical structure

14. Two statements are subcontraries if and only if both can be true but both cannot be false

15. An argument from lack of evidence

16. The quantity of a statement is the scope of its claim about the extension of the subject: universal (entire extension) or particular (partial)

17. Is a syllogism of the same form as the original - but with obviously true premises and false conclusion - in order to show the original to be invalid

18. The predicate of the conclusion and is used in one premise

19. A term that - within a statement - refers to all members of its class

20. A sentence which is either true or false

21. An argument in which a statement is unstated and assumed. Specifically - it is a syllogism with one assumed statement

22. An illegitimate appeal to a majority

23. Alters the meaning of a statement through changed emphasis

24. Arguments that confuse the issue by pointing to information that is actually irrelevant to the conclusion

25. The extention of a term is the sum of all the individual objects described by it