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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 statement that reverses and negates both the subject and predicate of the original






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






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






4. The fallacy of transferring attributes from whole to part






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






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






7. A statement cannot be both true and false






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






9. 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






10. An illegitimate appeal to force






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






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






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






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






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






16. The premise containing the major term






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






18. A question crafted to exclude any possible legitimate response






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






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






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






22. An argument from lack of evidence






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






38. Found once in each premise






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






40. 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






41. A sentence which is either true or false






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






43. A concept that can be expressed precisely






44. The science and art of reasoning well






45. A hasty generalization






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






47. Making an argument based on a false dilemma






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






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






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