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Introductory Logic Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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 hasty generalization






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






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






4. The subject of the conclusion and is used in the other premise






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






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






7. An argument from lack of evidence






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






9. Is valid and has true premises






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






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






12. Alters the meaning of a statement through changed emphasis






13. A statement of the opposite quality with a negated predicate






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






15. Found once in each premise






16. An argument that uses both hypothetical and categorical statements






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






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






19. The science and art of reasoning well






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






21. An illegitimate appeal to a majority






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






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






24. 'it does not follow'; that an argument is invalid






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






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






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






28. An argument based merely on the passage of time






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






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






31. 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






32. The fallacy of transferring attributes from whole to part






33. Secretly assuming what you are trying to prove






34. 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






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






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






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






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






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






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






41. 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






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






43. Arguments that confuse the real issue with multiple - vague - or otherwise unclear meanings






44. Arguments that fail to establish their conclusions because of a weakness in logical structure






45. An illegimate appeal to authority






46. Any statement is either true or false






47. Deals directly with the proper modes of reasoning






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






49. Difference of opinion or perception






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