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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. An argument from lack of evidence






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






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






4. A sentence which is either true or false






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






6. Deals directly with the proper modes of reasoning






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






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






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






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






11. A vagueness of grammar that disguises or alters meaning






12. A statement cannot be both true and false






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






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






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






16. An illegitimate appeal to force






17. The fallacy of transferring attributes from whole to part






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






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






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






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






22. 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






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






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






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






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






27. Contains the minor term






28. 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






29. An argument that uses both hypothetical and categorical statements






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






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






32. Difference of opinion or perception






33. An illegimate appeal to authority






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






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






36. An argument that uses only hypothetical statements






37. A statement that reverses the subject and predicate






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






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






40. A hasty generalization






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






42. The science and art of reasoning well






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






44. Alters the meaning of a statement through changed emphasis






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






46. A concept that can be expressed precisely






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






48. An argument based merely on the passage of time






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






50. 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