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






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






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






4. A vagueness of grammar that disguises or alters meaning






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






6. An argument from lack of evidence






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






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






9. An illegitimate appeal to force






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






11. A statement that reverses the subject and predicate






12. Alters the meaning of a statement through changed emphasis






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






14. Deals directly with the proper modes of reasoning






15. A statement cannot be both true and false






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






17. If a statement is true - then it is true






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






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






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






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






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






23. Any statement is either true or false






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






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






26. An argument that uses both hypothetical and categorical statements






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






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






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






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






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






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






33. Secretly assuming what you are trying to prove






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






35. Contains the minor term






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






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






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






39. An illegitimate appeal to a majority






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






41. 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






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






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






44. A three letter description of the types of categorical statements it contains when arranged in stadard order






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






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






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






48. Is valid and has true premises






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






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