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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 illegitimate appeal to force






2. The fallacy of transferring attributes from whole to part






3. Any statement is either true or false






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






5. The premise containing the major term






6. The science and art of reasoning well






7. A question crafted to exclude any possible legitimate response






8. 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






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






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






11. Making an argument based on a false dilemma






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






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






14. A hasty generalization






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






16. A statement that reverses the subject and predicate






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






18. An illegitimate appeal to a majority






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






20. Alters the meaning of a statement through changed emphasis






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






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






23. A statement cannot be both true and false






24. 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






25. An argument based merely on the passage of time






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






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






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






29. Is valid and has true premises






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






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






32. A sentence which is either true or false






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






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






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






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






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






38. Deals directly with the proper modes of reasoning






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






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






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






42. A vagueness of grammar that disguises or alters meaning






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






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






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






46. A concept that can be expressed precisely






47. Difference of opinion or perception






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






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






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