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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 word is ambiguous if it has more than one possible meaning






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






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






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






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. Difference of opinion or perception






8. An illegimate appeal to authority






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






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






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






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






13. Deals directly with the proper modes of reasoning






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






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






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






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






18. A hasty generalization






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






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






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






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






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






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






25. An illegitimate appeal to a majority






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






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






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






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






30. An illegitimate appeal to force






31. 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






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






33. An argument based merely on the passage of time






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






35. The premise containing the major term






36. A vagueness of grammar that disguises or alters meaning






37. An argument that uses both hypothetical and categorical statements






38. 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






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






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






41. Found once in each premise






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






43. Alters the meaning of a statement through changed emphasis






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






45. A sentence which is either true or false






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






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






48. An argument that uses only hypothetical statements






49. An argument from lack of evidence






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