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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 subcontraries if and only if both can be true but both cannot be false






2. Deals directly with the proper modes of reasoning






3. Alters the meaning of a statement through changed emphasis






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






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






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






7. Any statement is either true or false






8. A statement that reverses the subject and predicate






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






10. An illegitimate appeal to a majority






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






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






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






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






15. 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






16. Difference of opinion or perception






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






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






19. 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






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






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






22. A statement cannot be both true and false






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






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






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






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






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






28. Is valid and has true premises






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






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






31. The fallacy of transferring attributes from part to whole






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






33. A vagueness of grammar that disguises or alters meaning






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






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






36. An argument that uses only hypothetical statements






37. An illegitimate appeal to force






38. Contains the minor term






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






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






41. Making an argument based on a false dilemma






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






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






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






45. A sentence which is either true or false






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






47. An illegimate appeal to authority






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






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






50. 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