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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. Any statement is either true or false






3. An illegitimate appeal to force






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






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






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






7. 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






8. Is valid and has true premises






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






10. A vagueness of grammar that disguises or alters meaning






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






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






13. A question crafted to exclude any possible legitimate response






14. Alters the meaning of a statement through changed emphasis






15. An illegitimate appeal to a majority






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






17. The fallacy of transferring attributes from part to whole






18. Secretly assuming what you are trying to prove






19. A statement that reverses the subject and predicate






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






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






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






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






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






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






26. A statement cannot be both true and false






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






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






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






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






31. Contains the minor term






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






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






34. An argument from lack of evidence






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






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






37. An argument that uses only hypothetical statements






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






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






40. Difference of opinion or perception






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






42. A sentence which is either true or false






43. 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






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






45. The fallacy of transferring attributes from whole to part






46. Found once in each premise






47. A hasty generalization






48. The premise containing the major term






49. The science and art of reasoning well






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







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