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Introductory Logic Vocab

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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A sentence which is either true or false

2. A statement that affirms an outcome based on a condition.

3. Two statements are independant if the truth or falsity of one has no effect on the truth or falsity of the other

4. An illegitimate appeal to a majority

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

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

7. Words that set boundaries - referring only to a limited class of things

8. 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

9. The relationship between a universal and particular statement of the same quality - in which the falsity of the particular necessitates the falsity of the universal

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

11. A vagueness of grammar that disguises or alters meaning

12. Difference of opinion or perception

13. A popular but invalid (or unhelpful) form of argument

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

15. A statement which can be inferred directly from another statement

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

17. Any statement is either true or false

18. Found once in each premise

19. Attacking a position by pointing out how the arguer came to hold it

20. A hasty generalization

21. An argument that uses only hypothetical statements

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

23. A self-contradiction is a statement that is false due to its logical structure

24. A supported statement is a statement whose truth value depends on evidence or information from outside itself

25. When there appears to be inconsistency - we have a disagreement

26. A statement that reverses the subject and predicate

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

28. Secretly assuming what you are trying to prove

29. Contains the minor term

30. Deductive argument consisting of three statements in categorical form that together use only three terms - called the major - minor - and middle

31. The subject of a statement is the term being described - or about which something is asserted

32. Deals directly with the proper modes of reasoning

33. The conclusion of an argument is the statement which appears to be implied by the other statements in the argument - which are called premises

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

35. The premise containing the major term

36. Improperly assuming that a sequence in time implies a cause and effect

37. A question crafted to exclude any possible legitimate response

38. Two statements are related by implication if the truth of one requires the truth of the other

39. A verbal attack on a person rather than his argument

40. A representation of a syllogism - having statements in standard order with standard abbreviations of its terms

41. An argument based merely on the passage of time

42. Two statements are consistent if they can both be true at the same time

43. An illegimate appeal to authority

44. The result of the condition - the part after the 'then'

45. The sum of all the common attributes denoted by the term

46. The fallacy of transferring attributes from part to whole

47. A word is ambiguous if it has more than one possible meaning

48. The science and art of reasoning well

49. A verbal disagreement is a misunderstanding due to differing definitions to differing definitions for one or more words

50. A word - often a relative pronoun or adverb - that refers to a broad range of things or times