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Introductory Logic Vocab

  • Answer 50 questions in 15 minutes.
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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 statement that reverses the subject and predicate

2. The fallacy of transferring attributes from whole to part

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

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

5. Alters the meaning of a statement through changed emphasis

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

7. A real disagreement is an actual inconsistancy between two statements: they cannot both be true at the same time

8. A sentence which is either true or false

9. Points to an inconsistency between a person's argument and behavior

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

11. An argument based merely on the passage of time

12. A vagueness of grammar that disguises or alters meaning

13. A concept that can be expressed precisely

14. A syllogism is valid if and only if the conclusion is necessarily true given that the premises are true

15. A question crafted to exclude any possible legitimate response

16. An illegitimate appeal to a majority

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

18. The premise containing the major term

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

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

21. A genus of a term is a term that is more general - broad - or abstract than the original term and includes it

22. 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

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

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

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

26. Two statements are logically equivalent if they imply one another

27. Contains the minor term

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

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

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

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

32. Deals directly with the proper modes of reasoning

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

34. An illegitimate appeal to force

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

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

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

38. Reasoning with probability from examples or experience to general rules

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

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

41. A statement cannot be both true and false

42. Two statements are in contradiction if and only if they always have opposite truth values

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

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

45. A statement that reverses and negates both the subject and predicate of the original

46. The condition - the part following the 'if'

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

48. Two statements are contrary if and only if they can both be false but cannot both be true

49. An illegimate appeal to authority

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