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Introductory Logic Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 supported statement is a statement whose truth value depends on evidence or information from outside itself






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






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






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






5. The premise containing the major term






6. An argument from lack of evidence






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






8. A statement that reverses and negates both the subject and predicate of the original






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






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






11. 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






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






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






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






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






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






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






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






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






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






21. Any statement is either true or false






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






23. A statement cannot be both true and false






24. Alters the meaning of a statement through changed emphasis






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






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






27. The science and art of reasoning well






28. A concept that can be expressed precisely






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






30. An argument that uses both hypothetical and categorical statements






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






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






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






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






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






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






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






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






39. Is valid and has true premises






40. The fallacy of transferring attributes from part to whole






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






42. 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






43. An illegitimate appeal to a majority






44. Contains the minor term






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






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






47. An illegitimate appeal to force






48. Difference of opinion or perception






49. An argument based merely on the passage of time






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







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